Bump maven-site-plugin from 3.10.0 to 3.11.0

Bumps maven-site-plugin from 3.10.0 to 3.11.0.

Commits

• a0e97b4 [maven-release-plugin] prepare release maven-site-plugin-3.11.0
• 26979ff [MSITE-882] Upgrade Maven Reporting Exec to 1.6.0
• 09d2f6f [MSITE-881] Upgrade Maven Reporting API to 3.1.0
• eca1960 [MSITE-883] Upgrade plugins in ITs
• db0ed41 [MSITE-880] AbstractSiteDeployWebDavTest should not log
• 94e03e7 Bump maven-archiver from 3.5.1 to 3.5.2
• 1399379 send PR notifications to issues@maven.a.o
• 3ebcef6 [MSITE-870] wagon-provider-api is also provided by Maven Core
• 75c8d35 update GitHub notifications scheme
• 26d92ab [maven-release-plugin] prepare for next development iteration
• See full diff in compare view