Fix compilation warnings

There are 46 warnings
As in here:
required: UpdateAction
found: UpdateAction
46 warnings

Run ./gradlew build to see all of them

Fix all of them and make sure the project still compiles and pass all CI cycles

Run ./gradlew build and inspect the 46 compilation warnings, starting with the reported UpdateAction versus UpdateAction mismatch. Trace each warning to its source and resolve them without breaking compilation. Done means the build succeeds with the warnings fixed and all CI cycles pass.

Written by the indexing model from the issue text.