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Use `setup-codeql` logic for finding release assets in `start-proxy` #337

Job	Run time
Per-language bundles (java, ubuntu-latest, nightly-latest, none)	58s
Per-language bundles (javascript, ubuntu-latest, nightly-latest)	56s
Per-language bundles (actions, ubuntu-latest, nightly-latest, actions javascript)	49s
Per-language bundles (go, ubuntu-latest, nightly-latest, autobuild)	1m 6s
Per-language bundles (python, ubuntu-latest, nightly-latest)	51s
Per-language bundles (csharp, ubuntu-latest, nightly-latest, none)	1m 7s
Per-language bundles (cpp, ubuntu-latest, nightly-latest, manual, gcc -o main main.c)	53s
Per-language bundles (swift, macos-latest-xlarge, nightly-latest, autobuild)	7m 41s
Per-language bundles (ruby, ubuntu-latest, nightly-latest)	42s
Per-language bundles (rust, ubuntu-latest, nightly-latest)	1m 51s
	16m 54s