kversion: ignore API keys 74,75 when guessing versions

These are in Kraft only, and are two requests from two separate KIPs
that aren't fully supported yet. Not sure why only these two were
stabilized.

pkg/kversion/kversion.go

@@ -334,7 +334,7 @@ func (vs *Versions) versionGuess(opts ...VersionGuessOpt) guess {
 		//
 		// TODO: add introduced-version to differentiate some specific
 		// keys.
-		skipKeys: []int16{4, 5, 6, 7, 27, 52, 53, 54, 55, 56, 57, 58, 59, 62, 63, 64, 67},
+		skipKeys: []int16{4, 5, 6, 7, 27, 52, 53, 54, 55, 56, 57, 58, 59, 62, 63, 64, 67, 74, 75},
 	}
 	for _, opt := range opts {
 		opt.apply(&cfg)