GitHub Actions: cache buildSrc/build to speed up Gradle builds by ~40 seconds

.github/workflows/ci.yml

@@ -14,6 +14,7 @@ on:
       - '.*'
       - '**/.settings/**'
       - 'flatlaf-core/svg/**'
+      - 'flatlaf-natives/**'
       - 'flatlaf-testing/dumps/**'
       - 'flatlaf-testing/misc/**'
       - 'images/**'
@@ -32,7 +33,9 @@ jobs:
         with:
           java-version: 21
           distribution: temurin  # pre-installed on ubuntu-latest
-          cache: gradle
+
+      - name: Cache Gradle
+        uses: ./.github/actions/cache-gradle
 
 
         # test against
@@ -100,7 +103,9 @@ jobs:
         with:
           java-version: 21
           distribution: temurin  # pre-installed on ubuntu-latest
-          cache: gradle
+
+      - name: Cache Gradle
+        uses: ./.github/actions/cache-gradle
 
       - name: Release a new stable version to Maven Central
         run: ./gradlew publishToSonatype closeSonatypeStagingRepository :flatlaf-demo:build :flatlaf-theme-editor:build -PskipFonts -Prelease -Dorg.gradle.parallel=false

.github/workflows/error-prone.yml

@@ -14,6 +14,7 @@ on:
       - '.*'
       - '**/.settings/**'
       - 'flatlaf-core/svg/**'
+      - 'flatlaf-natives/**'
       - 'flatlaf-testing/dumps/**'
       - 'flatlaf-testing/misc/**'
       - 'images/**'
@@ -31,7 +32,9 @@ jobs:
         with:
           java-version: 21
           distribution: temurin  # pre-installed on ubuntu-latest
-          cache: gradle
+
+      - name: Cache Gradle
+        uses: ./.github/actions/cache-gradle
 
       - name: Check with Error Prone
         run: ./gradlew errorprone

.github/workflows/fonts.yml

@@ -39,7 +39,9 @@ jobs:
               with:
                   java-version: 21
                   distribution: temurin  # pre-installed on ubuntu-latest
-                  cache: gradle
+
+            - name: Cache Gradle
+              uses: ./.github/actions/cache-gradle
 
             - name: Build with Gradle
               run: ./gradlew :flatlaf-fonts-${{ matrix.font }}:build

.github/workflows/natives.yml

@@ -63,7 +63,9 @@ jobs:
               with:
                   java-version: 21
                   distribution: temurin
-                  cache: gradle
+
+            - name: Cache Gradle
+              uses: ./.github/actions/cache-gradle
 
             - name: Build with Gradle
               # --no-daemon is necessary on Windows otherwise caching Gradle would fail with:

.github/workflows/pr-snapshots.yml

@@ -26,7 +26,9 @@ jobs:
         with:
           java-version: 21
           distribution: temurin  # pre-installed on ubuntu-latest
-          cache: gradle
+
+      - name: Cache Gradle
+        uses: ./.github/actions/cache-gradle
 
       - name: Publish PR snapshot to Sonatype Central
         run: >