feat(transform_conformance): skip plugins we don't support yet #8463

Job	Run time
Check and Build (windows-latest)	1m 53s
Conformance	2m 22s
Check and Build (ubuntu-latest)	30s
Check and Build (macos-14)	37s
Cargo Deny	3s
Doc	38s
Format	14s
Test (windows-latest)	2m 5s
Clippy	45s
Test (ubuntu-latest)	1m 6s
Test (macos-14)	51s
Spell Check	3s
Check Unused Dependencies	16s
Check Wasm	59s
	12m 22s

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