updates actions/cache to v4

https://github.blog/changelog/2024-12-05-notice-of-upcoming-releases-and-breaking-changes-for-github-actions/#actions-cache-v1-v2-and-actions-toolkit-cache-package-closing-down

Author: Karl Heinz Struggl

.github/workflows/generate-dokka.yml

@@ -27,7 +27,7 @@ jobs:
           java-version: "11"
 
       - name: Cache Gradle packages
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: |
             ~/.gradle/caches

.github/workflows/kotlin-multiplatform-gradle-plugin.yml

@@ -27,7 +27,7 @@ jobs:
           distribution: temurin
 
       - name: Cached Konan
-        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 #v3
+        uses: actions/cache@v4
         with:
           path: ~/.konan
           key: ${{ runner.os }}-konan-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
@@ -45,4 +45,4 @@ jobs:
         uses: codecov/codecov-action@5ecb98a3c6b747ed38dc09f787459979aebb39be # pin@v4
         with:
           name: sentry-kotlin-multiplatform-gradle-plugin
-          token: ${{ secrets.CODECOV_TOKEN }}
+          token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/kotlin-multiplatform.yml

@@ -24,7 +24,7 @@ jobs:
           distribution: temurin
 
       - name: Cached Konan
-        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 #v3
+        uses: actions/cache@v4
         with:
           path: ~/.konan
           key: ${{ runner.os }}-konan-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}
@@ -52,7 +52,7 @@ jobs:
           distribution: temurin
 
       - name: Cached Konan
-        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 #v3
+        uses: actions/cache@v4
         with:
           path: ~/.konan
           key: ${{ runner.os }}-konan-${{ hashFiles('**/*.gradle*') }}-${{ hashFiles('**/gradle/wrapper/gradle-wrapper.properties') }}