[CI] Update LLMGateway chart values.yaml (#1381)

Co-authored-by: HinaTrue <[email protected]>

Author: innoavator

charts/tfy-llm-gateway/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 name: tfy-llm-gateway
-version: 0.55.0-rc.1
+version: 0.55.0
 description: "Truefoundry LLM Gateway deployment chart"
 maintainers:
   - name: truefoundry