Fix Maven Central release: pin Maven 3.9.16, bump central-publishing to 0.11.0

.github/workflows/release.yml

@@ -34,6 +34,17 @@ jobs:
           server-id: ossrh
           server-username: MAVEN_USERNAME
           server-password: MAVEN_PASSWORD
+      # Maven 3.10 leaves maven-metadata-local.xml and _remote.repositories in the
+      # central-publishing staging directory, and Maven Central rejects the bundle.
+      - name: Set up Maven 3.9
+        env:
+          MAVEN_VERSION: 3.9.16
+          MAVEN_SHA512: 831a8591fe20c8243b1dbe7d71e3244f31d1665b0804b2e825e38cbbe5ce0cafb8338851f90780735568773e0a6cd07bbec107cda0b896b008b861075358b6f6
+        run: |
+          curl -fsSL --retry 5 -o "$RUNNER_TEMP/maven.tar.gz" "https://archive.apache.org/dist/maven/maven-3/$MAVEN_VERSION/binaries/apache-maven-$MAVEN_VERSION-bin.tar.gz"
+          echo "$MAVEN_SHA512  $RUNNER_TEMP/maven.tar.gz" | sha512sum -c -
+          tar xzf "$RUNNER_TEMP/maven.tar.gz" -C "$RUNNER_TEMP"
+          echo "$RUNNER_TEMP/apache-maven-$MAVEN_VERSION/bin" >> "$GITHUB_PATH"
       - name: Cache Maven packages
         uses: actions/cache@v5
         with:

pom.xml

@@ -880,7 +880,7 @@
 		<plugin>
 			<groupId>org.sonatype.central</groupId>
 			<artifactId>central-publishing-maven-plugin</artifactId>
-			<version>0.8.0</version>
+			<version>0.11.0</version>
 			<extensions>true</extensions>
 			<configuration>
 			    <publishingServerId>ossrh</publishingServerId>