fix(ci): reduce Maven Central rate limiting

Signed-off-by: Arnab Nandy <arnab_nandy7@yahoo.com>

Author: arnabnandy7

.github/workflows/build.yml

@@ -27,6 +27,7 @@ jobs:
         with:
           java-version: '21'
           distribution: 'zulu'
+          cache: 'gradle'
       - name: Upgrade Gradle wrapper for newer Java versions
         if: ${{ !contains(fromJSON('["11", "17", "21"]'), matrix.java) }}
         run: ./gradlew wrapper --gradle-version=9.0
@@ -35,4 +36,5 @@ jobs:
         with:
           java-version: ${{ matrix.java }}
           distribution: 'zulu'
+          cache: 'gradle'
       - run: ./gradlew shadowJar

.github/workflows/itest.yml

@@ -34,6 +34,7 @@ jobs:
     runs-on: ubuntu-x64
     strategy:
       fail-fast: false
+      max-parallel: 4
       matrix:
         test: ${{ fromJSON(needs.discover.outputs.tests) }}
         os: [alpine-3.22, alpine-3.23, ubuntu-22.04, ubuntu-24.04]

.github/workflows/test.yml

@@ -27,6 +27,7 @@ jobs:
         with:
           java-version: '21'
           distribution: 'zulu'
+          cache: 'gradle'
       - name: Upgrade Gradle wrapper for newer Java versions
         if: ${{ !contains(fromJSON('["11", "17", "21"]'), matrix.java) }}
         run: ./gradlew wrapper --gradle-version=9.0
@@ -35,6 +36,7 @@ jobs:
         with:
           java-version: ${{ matrix.java }}
           distribution: 'zulu'
+          cache: 'gradle'
       - run: ./gradlew test --stacktrace
   javadoc:
     runs-on: ubuntu-x64
@@ -47,4 +49,5 @@ jobs:
         with:
           java-version: 11
           distribution: 'temurin'
+          cache: 'gradle'
       - run: ./gradlew javaDoc --info