Add 5.5.4 tag to point to the same commit as 5.5.5

With: https://github.com/docker-library/official-images/pull/16181/files we accidentally marked the docker image as `5.5.5`, instead of `5.5.4`. As a workaround we skip `5.5.5` CrateDB release and if a hotfix release is needed for `5.5` will release a `5.5.6` version in the future.

library/crate

@@ -12,7 +12,7 @@ Tags: 5.6.4, 5.6
 Architectures: amd64, arm64v8
 GitCommit: 51f22540833a2f98b7984019e16d496314934a91
 
-Tags: 5.5.5, 5.5
+Tags: 5.5.5, 5.5.4, 5.5
 Architectures: amd64, arm64v8
 GitCommit: 976468768511b4574a26631fe646ff7fdfaf03ef