Bump actions/checkout from 3 to 4 (#235)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/check-supported-versions.yaml

@@ -21,7 +21,7 @@ jobs:
             flags: -am -pl modules/openapi-generator-cli -Dmaven.javadoc.skip=true -Dmaven.test.skip=true
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up JDK ${{ matrix.java }}
         uses: actions/setup-java@v3
@@ -79,7 +79,7 @@ jobs:
 #             flags: --skip-docs
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download build artifact
         uses: actions/download-artifact@v3
         with:

.github/workflows/gradle-test.yaml

@@ -34,7 +34,7 @@ jobs:
           - samples/client/petstore/java/okhttp-gson
           - samples/client/petstore/java/okhttp-gson-group-parameter
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'

.github/workflows/openapi-generator.yaml

@@ -15,7 +15,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
@@ -51,7 +51,7 @@ jobs:
     needs:
       - build
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
@@ -86,7 +86,7 @@ jobs:
     needs:
       - build
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
@@ -124,7 +124,7 @@ jobs:
       - build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
@@ -159,7 +159,7 @@ jobs:
     needs:
       - build
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:
@@ -192,7 +192,7 @@ jobs:
     needs:
       - build
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:

.github/workflows/samples-dart.yaml

@@ -17,7 +17,7 @@ jobs:
     name: Tests Dart
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'

.github/workflows/samples-dotnet.yaml

@@ -26,7 +26,7 @@ jobs:
           - samples/server/petstore/aspnetcore-6.0-pocoModels
           - samples/server/petstore/aspnetcore-6.0-project4Models
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-dotnet@v3
         with:
           dotnet-version: '6.0.x'

.github/workflows/samples-groovy.yaml

@@ -21,7 +21,7 @@ jobs:
         sample:
           - samples/client/petstore/groovy
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'

.github/workflows/samples-java-client-jdk11.yaml

@@ -39,7 +39,7 @@ jobs:
           - samples/client/petstore/java/feign
           - samples/client/petstore/java/jersey1
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'

.github/workflows/samples-java-play-framework.yaml

@@ -29,7 +29,7 @@ jobs:
           - samples/server/petstore/java-play-framework-no-swagger-ui
           - samples/server/petstore/java-play-framework-no-wrap-calls
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'

.github/workflows/samples-jaxrs.yaml

@@ -39,7 +39,7 @@ jobs:
           - samples/server/petstore/jaxrs-cxf-cdi
           - samples/server/petstore/jaxrs-cxf-non-spring-app
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'

.github/workflows/samples-jdk17.yaml

@@ -25,7 +25,7 @@ jobs:
           # servers
           - samples/openapi3/server/petstore/springboot-3
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'