Merge pull request #2951 from github/github-action/bump-cli

Bump CLI Version to v2.15.0 for integration tests

Author: henrymercer

extensions/ql-vscode/supported_cli_versions.json

@@ -1,4 +1,5 @@
 [
+  "v2.15.0",
   "v2.14.6",
   "v2.13.5",
   "v2.12.7",