GitHub Actions version updates

.github/workflows/build.yml

@@ -7,8 +7,8 @@ jobs:
     name: "Validate Gradle Wrapper"
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
-      - uses: gradle/actions/wrapper-validation@v4
+      - uses: actions/checkout@v6
+      - uses: gradle/actions/wrapper-validation@v5
 
   build_gradle:
     needs: validate_gradle_wrapper
@@ -22,9 +22,9 @@ jobs:
     name: ${{ matrix.os }} JDK ${{ matrix.java }}
     steps:
     - name: Git checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Set up Java
-      uses: actions/setup-java@v4
+      uses: actions/setup-java@v5
       with:
         distribution: ${{ matrix.distribution }}
         java-version: ${{ matrix.java }}
@@ -40,12 +40,12 @@ jobs:
       working-directory: ./build
       if: runner.os == 'macOS'
     - name: Upload SHA256SUMS
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: SHA256SUMS-${{ matrix.os }}-${{ matrix.java }}
         path: build/SHA256SUMS
     - name: Upload artifacts
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: artifacts-${{ matrix.os }}-${{ matrix.java }}
         path: build/artifacts
@@ -62,7 +62,7 @@ jobs:
     name: ${{ matrix.os }} JDK ${{ matrix.java-version }}.${{ matrix.distribution }}
     steps:
       - name: Git checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up GraalVM
         uses: graalvm/setup-graalvm@v1
         with:
@@ -73,7 +73,7 @@ jobs:
       - name: Build with Gradle
         run: ./gradlew consensusj-jrpc-echod:nativeTest nativeCompile --scan --info --stacktrace
       - name: Upload jrpc tool as artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: jsonrpc-tool-${{ matrix.os }}-jdk${{ matrix.java-version }}
           path: consensusj-jrpc/build/jrpc
@@ -87,7 +87,7 @@ jobs:
       fail-fast: false
     name: RegTest ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Install Nix
         uses: cachix/install-nix-action@v31
         with:
@@ -100,7 +100,7 @@ jobs:
         shell: 'nix develop -c bash -e {0}'
         run: ./test-run-regtest.sh
       - name: Upload RegTest results as artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         if: failure()
         with:
           name: regtest-consensusj-jdk${{ matrix.java }}-${{ matrix.os }}-reports
@@ -117,7 +117,7 @@ jobs:
     name: ${{ matrix.os }} Nix
     steps:
       - name: Git checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install Nix
         uses: cachix/install-nix-action@v31
         with: