Updating servicemonitor configuration for nexus metrics

Package Merge Request

Package Changes

Updating package to remove metrics mTLS exception

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/nexus/-/merge_requests/73

For Issue

Closes https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/nexus/-/issues/40