chore(deps): update gradle/gradle-build-action action to v2.12.0

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -53,17 +53,17 @@ jobs:
           go install github.com/sigstore/fulcio@main
 
     - name: Test sigstore-java
-      uses: gradle/gradle-build-action@982da8e78c05368c70dac0351bb82647a9e9a5d2 # v2.11.1
+      uses: gradle/gradle-build-action@a8f75513eafdebd8141bd1cd4e30fcd194af8dfa # v2.12.0
       with:
         arguments: build
 
     - name: Ensure sigstore-java self signing still works
-      uses: gradle/gradle-build-action@982da8e78c05368c70dac0351bb82647a9e9a5d2 # v2.11.1
+      uses: gradle/gradle-build-action@a8f75513eafdebd8141bd1cd4e30fcd194af8dfa # v2.12.0
       with:
         arguments: sigstore-java:publishToMavenLocal -Prelease -PskipPgpSigning
 
     - name: Test sigstore-java/sandbox
-      uses: gradle/gradle-build-action@982da8e78c05368c70dac0351bb82647a9e9a5d2 # v2.11.1 
+      uses: gradle/gradle-build-action@a8f75513eafdebd8141bd1cd4e30fcd194af8dfa # v2.12.0 
       with:
         arguments: build
         build-root-directory: sandbox

.github/workflows/conformance.yml

@@ -24,7 +24,7 @@ jobs:
           distribution: 'temurin'
 
       - name: Build sigstore-java
-        uses: gradle/gradle-build-action@982da8e78c05368c70dac0351bb82647a9e9a5d2 # v2.11.1
+        uses: gradle/gradle-build-action@a8f75513eafdebd8141bd1cd4e30fcd194af8dfa # v2.12.0
         with:
           arguments: :sigstore-cli:build