fix: image tag format and update latest

Author: 4ndrelim

helm-chart/values.yaml

@@ -14,7 +14,7 @@ paperdebuggerMcpServer:
   image: ghcr.io/paperdebugger/paperdebugger-mcp-server:main-14409c5
 
 paperdebuggerXtraMcpServer:
-  image: ghcr.io/paperdebugger/xtragpt-mcp-server:sha-sha-d109bb0
+  image: ghcr.io/paperdebugger/xtragpt-mcp-server:sha-3bfcca3
 
 mongo:
   in_cluster: true