feat(transform_conformance): skip plugins we don't support yet #8448

Job	Run time
Check and Build (windows-latest)	1m 8s
Check and Build (ubuntu-latest)	27s
Conformance	2m 20s
Check and Build (macos-14)	37s
Cargo Deny	3s
Doc	41s
Format	12s
Clippy	51s
Test (windows-latest)	2m 21s
Test (ubuntu-latest)	51s
Test (macos-14)	52s
Spell Check	6s
Check Unused Dependencies	16s
Check Wasm	1m 1s
	11m 46s

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