chore(deps): update ghcr.io/semgrep/mcp docker tag to v0.5.1

Author: renovate[bot]

registry/semgrep/spec.yaml

@@ -33,7 +33,7 @@ tags:
     - semgrep
     - ast
     - code-analysis
-image: ghcr.io/semgrep/mcp:0.4.1
+image: ghcr.io/semgrep/mcp:0.5.1
 permissions:
     network:
         outbound: