A backport of #1719.

JAVA-5880

The `pathCache` utilised the string representation of the KProperty instance.
The custom implementations didn't include the calculated `path` value, this can
lead to naming collisions in the `pathCache` key.

This commit adds `hashCode` and `equals` methods to ensure the `name` value is included
in our custom implementations of `KProperty1`. Finally, the cache key now uses the `hashCode`
for the cacheKey.

JAVA-5868
Co-authored-by: Ross Lawley <ross@mongodb.com>

- Increase timeout for k8s tests.
- Add explicit "assume role".
- Include submodules to OIDC testing.

JAVA-5885

JAVA-5880

…ine (#1737)

- Perform handshake after marking handshake started.
- Add an integration test case, as upstream didn't include one to cover this change.

JAVA-5797

This plugin will eventually be used for the migration to the central portal
Currently still uses the legacy osshr sonatype location.

As the nexus-publish plugin can only be configured in the root project
the username and password logic was moved out of conventions/publishing.gradle.kts
and into the root buid.gradle.kts.

Note: The nexus-publish plugin builds upon the gradle maven-publish
plugin so even though the configuration is in the root project,
it will only publish projects that use the publishing convention.

JAVA-5899