Add release with njord to sonatype-central

[wendigo]

[INFO] --- njord:0.8.7:validate (default-cli) @ jmxutils ---
[INFO] Found multiple stores, using latest: 'jmxutils-00004'
[INFO] Validated jmxutils-00004 staged from org.weakref:jmxutils:jar:1.27 (2025-12-09T14:59:24.257Z, RELEASE, release-sca, 8 artifacts) against sonatype-cp
[INFO] Validation results for jmxutils-00004
[INFO] ArtifactStore jmxutils-00004 staged from org.weakref:jmxutils:jar:1.27 (2025-12-09T14:59:24.257Z, RELEASE, release-sca, 8 artifacts) passed 24 validation

Usage:

export MAVENCENTRAL_USERNAME=username
export MAVENCENTRAL_PASSWORD=password
./mvnw release:prepare -B && ./mvnw release:perform -B && ./mvnw njord:validate && ./mnvw njord:publish

[wendigo]

cc @martint

[wendigo]

@martint addressed