Update maven.version to v3.9.16

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apache.maven:maven-compat (source)	3.9.15 → 3.9.16
org.apache.maven:maven-artifact (source)	3.9.15 → 3.9.16
org.apache.maven:maven-core (source)	3.9.15 → 3.9.16
org.apache.maven:maven-plugin-api (source)	3.9.15 → 3.9.16

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Release Notes

apache/maven (org.apache.maven:maven-compat)

v3.9.16: 3.9.16

🐛 Bug Fixes

• Trim threadConfiguration to accept input surrounded with spaces (#​12042) @​slawekjaranowski
• Backport: Maven 3.10.x fixed plugin resolution (#​12022) @​cstamas

📦 Dependency updates

• Bump org.codehaus.plexus:plexus-classworlds from 2.9.0 to 2.11.0 (#​12039) @​dependabot[bot]
• [3.9.x] Bump to parent POM 48 (#​12024) @​cstamas
• Bump commons-io:commons-io from 2.21.0 to 2.22.0 (#​11980) @​dependabot[bot]
• Bump com.google.guava:guava from 33.5.0-jre to 33.6.0-jre (#​11951) @​dependabot[bot]
• Bump actions/cache from 5.0.4 to 5.0.5 (#​11943) @​dependabot[bot]

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