add org.apache.sling.testing.sling-mock-oak 4.1.0-1.86.0

[hboutemy]

https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/org/apache/sling/org.apache.sling.testing.sling-mock-oak/README.md

[github-actions]

• org.apache.sling:*.testing.sling-mock-oak 4.1.0-1.86.0

./rebuild.sh content/org/apache/sling/org.apache.sling.testing.sling-mock-oak/org.apache.sling.testing.sling-mock-oak-4.1.0-1.86.0.buildspec

version=4.1.0-1.86.0 ok=4 ko=0 ignored=0 koFiles="" ignoredFiles="" reference_java_version="21 (from MANIFEST.MF Build-Jdk-Spec)" reference_os_name="Unix (from pom.properties newline)" 

docker build -q -t ghcr.io/jvm-repo-rebuild/rb-ubuntu-jdk21-toolchains-21	1:22.86 real,	0.18 user,	0.13 sys docker build -q -t ghcr.io/jvm-repo-rebuild/rb-ubuntu-jdk21-toolchains-21-maven-3.9.6	1:19.35 real,	0.12 user,	0.09 sys docker build -q -t ghcr.io/jvm-repo-rebuild/rb-ubuntu-jdk21-toolchains-21-maven-3.9.6-runner	0:10.03 real,	0.08 user,	0.06 sys docker build -q -t ghcr.io/jvm-repo-rebuild/rb-ubuntu-jdk21-toolchains-21-maven-3.9.6-runner-utc-en_us-0002	0:11.83 real,	0.08 user,	0.06 sys docker run --name rebuild-central --rm	0:42.15 real,	0.01 user,	0.01 sys