Merge cockroachdb#108363

108363: sctest: loop var capture fix r=renatolabs a=herkolategan

`tc` variable will be captured by reference in a loop and used by a parallel test, resulting in only the last case being tested. This change captures `tc`.

Release note: None
Epic: None

Co-authored-by: Herko Lategan <[email protected]>

Author: craig[bot]

pkg/sql/schemachanger/sctest/framework.go

@@ -712,6 +712,7 @@ func cumulativeTestForEachPostCommitStage(
 			}
 			var hasFailed bool
 			for _, tc := range testCases {
+				tc := tc // capture loop variable
 				fn := func(t *testing.T) {
 					tf(t, tc)
 				}