Merge branch 'update/version_5_5_0' into 'release/v5.5'

Update version to 5.5.0

See merge request espressif/esp-idf!40712

Author: ginkgm

.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: v5.5-rc1
+  LATEST_GIT_TAG: v5.5
 
   SUBMODULE_FETCH_TOOL: "tools/ci/ci_fetch_submodule.py"
   # by default we will fetch all submodules