change(version): Update version to 5.4.0

Author: AdityaHPatwardhan

.gitlab/ci/common.yml

@@ -40,7 +40,7 @@ variables:
   GIT_FETCH_EXTRA_FLAGS: "--no-recurse-submodules --prune --prune-tags"
   # we're using .cache folder for caches
   GIT_CLEAN_FLAGS: -ffdx -e .cache/
-  LATEST_GIT_TAG: v5.4-dev
+  LATEST_GIT_TAG: v5.4-beta1
 
   SUBMODULE_FETCH_TOOL: "tools/ci/ci_fetch_submodule.py"
   # by default we will fetch all submodules