Maven Resolver 1.9.10

Resolver 1.9.10 release notes: https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12320628&version=12353177
Resolver 1.9.9 (burned) release notes: https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12320628&version=12353151

Consolidated (1.9.10 + 1.9.9) release notes below.

Release Notes - Maven Resolver - Version 1.9.10

Bug

• [MRESOLVER-352] - Duplicate METADATA_DOWNLOADING event is being sent
• [MRESOLVER-357] - ConflictResolver STANDARD verbosity misbehaves

Improvement

• [MRESOLVER-360] - disable checksum by default for .sigstore in addition to .asc

Task

• [MRESOLVER-354] - Document expected checksums
• [MRESOLVER-359] - Make build be explicit about build time requirements

Dependency upgrade

• [MRESOLVER-358] - Upgrade Guava, Maven, mockito, Plexus Utils