Normalize `Bnd-LastModified` from runtime classpaths of surefire tests

Jars built by the curator project contain the "Bnd-LastModified" entry in jar manifests. This attribute contains a timestamp that changes on each build.

The Gradle Enterprise Maven Extension offers the ability to cache the results of surefire tests. When the timestamp value of "Bnd-LastModified" is changing on every build, the cache is invalidated and a cache hit never occurs for these expensive tests.