GH Actions build fatJar before building Rust client.

.github/workflows/release.yml

@@ -10,6 +10,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: zulu
+          java-version: 17
+      - uses: eskatos/gradle-command-action@v1
+        with:
+          arguments: fatJar
+      - uses: actions/upload-artifact@master
+        with:
+          name: fatjar
+          path: jgrab-runner/build/libs
+          if-no-files-found: error
       - uses: taiki-e/create-gh-release-action@v1
         with:
           changelog: CHANGELOG.MD
@@ -43,6 +55,12 @@ jobs:
       - uses: goto-bus-stop/setup-zig@v2
       - name: Install cargo-zigbuild
         run: cargo install cargo-zigbuild
+      - uses: actions/download-artifact@master
+        with:
+          name: fatjar
+          path: jgrab-runner/build/libs
+      - name: Display structure of downloaded files
+        run: ls -R jgrab-runner/build
       - uses: taiki-e/upload-rust-binary-action@v1
         with:
           manifest-path: ./jgrab-client/Cargo.toml