Release candidate tag created on 2025-07-28:08:33:36

PP-12801 Upgrade pact broker docker to latest version (#1423)

- Upgrades the pact broker source Docker image to the latest version.

  No breaking changes between the current version (2.110.0) and the latest (2.116.0) - see https://github.com/pact-foundation/pact_broker/releases

- Uses manifest sha instead of the image sha for AMD architecture to support building multi-arch docker images