Mitigate security vulnerabilities in CI

.github/dependabot.yml

@@ -1,6 +1,8 @@
 version: 2
 updates:
   - package-ecosystem: "github-actions"
+    cooldown:
+      default-days: 7
     directory: "/"
     schedule:
       interval: "weekly"

.github/workflows/build.yml

@@ -1,22 +1,22 @@
-name: Java CI with Gradle
-
-on: [push, pull_request]
+name: Build
+on: [pull_request, push, workflow_dispatch]
+permissions:
+  contents: read
 
 jobs:
   build:
+    # Only run on PRs if the source branch is on a different repo. We do not need to run everything twice.
     if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
-
     runs-on: ubuntu-24.04
-
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v6
+      uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
       with:
         persist-credentials: false
     - name: Set up Gradle
-      uses: gradle/actions/setup-gradle@v5
+      uses: gradle/actions/setup-gradle@4d9f0ba0025fe599b4ebab900eb7f3a1d93ef4c2 # 5.0.0
     - name: Set up JDK 17
-      uses: actions/setup-java@v5
+      uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # 5.0.0
       with:
         distribution: 'temurin'
         java-version: 17

.github/workflows/publish.yml

@@ -6,24 +6,27 @@ on:
       - dev
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   publish:
     if: github.repository_owner == 'ViaVersion'
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
         with:
           persist-credentials: false
       - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v5
+        uses: gradle/actions/setup-gradle@4d9f0ba0025fe599b4ebab900eb7f3a1d93ef4c2 # 5.0.0
       - name: Set up JDK 17
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # 5.0.0
         with:
           distribution: 'temurin'
           java-version: 17
           check-latest: true
-      - name: Build
+      - name: Build with Gradle
         run: ./gradlew build --refresh-dependencies
       - name: Publish to Hangar
         env:

.github/workflows/update-gradle-wrapper.yml

@@ -4,13 +4,18 @@ on:
   schedule:
     - cron: "0 0 * * 0"
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   update-gradle-wrapper:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
         with:
+          fetch-depth: 0
           persist-credentials: false
       - name: Update Gradle Wrapper
-        uses: gradle-update/update-gradle-wrapper-action@v2
+        uses: gradle-update/update-gradle-wrapper-action@512b1875f3b6270828abfe77b247d5895a2da1e5 # 2.1.0