Fix RELEASE_TAG for git tag population: (#494)

## Description


GitHub actions checks out the tag branch as a "detached HEAD" which caused the direct git tag lookup to be empty. This causes the release to fail.

Fixes: #

## How Has This Been Tested?





## How are existing users impacted? What migration steps/scripts do we need?





## Checklist:

I have:

- [ ] updated the documentation and/or roadmap (if required)
- [ ] added unit or e2e tests
- [ ] provided instructions on how to upgrade

Author: mergify[bot]

Makefile

@@ -159,14 +159,25 @@ set-manifest-image:
 ## Release
 ## --------------------------------------
 
-RELEASE_TAG := $(shell git describe --abbrev=0 2>/dev/null)
+# When running in GitHub Actions for a tag, use the tag name from GITHUB_REF
+# Otherwise, fall back to git describe to find the latest tag
+ifdef GITHUB_REF
+    ifeq ($(findstring refs/tags/,$(GITHUB_REF)),refs/tags/)
+        RELEASE_TAG := $(shell echo $(GITHUB_REF) | sed -e 's/refs\/tags\///')
+    else
+        RELEASE_TAG := $(shell git describe --abbrev=0 2>/dev/null)
+    endif
+else
+    RELEASE_TAG := $(shell git describe --abbrev=0 2>/dev/null)
+endif
 RELEASE_DIR ?= out/release
 
 $(RELEASE_DIR):
 	mkdir -p $(RELEASE_DIR)/
 
 .PHONY: release
 release: clean-release
+	@echo "Using RELEASE_TAG: $(RELEASE_TAG)"
 	$(MAKE) set-manifest-image MANIFEST_IMG=$(REGISTRY)/$(IMAGE_NAME) MANIFEST_TAG=$(RELEASE_TAG)
 	$(MAKE) release-manifests
 	$(MAKE) release-metadata