Remove support for CodeQL 2.13.4 and earlier #2154

Job	Run time
Resolve environment (ubuntu-latest, stable-v2.13.5)	39s
Resolve environment (macos-12, stable-v2.13.5)	2m 30s
Resolve environment (windows-latest, stable-v2.13.5)	2m 42s
Resolve environment (ubuntu-latest, default)	35s
Resolve environment (macos-latest, default)	1m 52s
Resolve environment (windows-latest, default)	1m 46s
Resolve environment (ubuntu-latest, linked)	22s
Resolve environment (macos-latest, linked)	2m 8s
Resolve environment (windows-latest, linked)	1m 47s
Resolve environment (ubuntu-latest, nightly-latest)	56s
Resolve environment (macos-latest, nightly-latest)	1m 56s
Resolve environment (windows-latest, nightly-latest)	3m 18s
	20m 31s

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