fix: skip some typecheck tests because error message changes

ldez · ldez · commit 3f04cb29f356 · 2023-01-30T09:08:41.000+01:00
diff --git a/test/testdata/notcompiles/typecheck_many_issues.go b/test/testdata/notcompiles/typecheck_many_issues.go
@@ -1,3 +1,5 @@
+//go:build go1.20
+
 //golangcitest:args -Etypecheck
 package testdata
 

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	`+//go:build go1.20`
	`2`	`+`
`1`	`3`	`//golangcitest:args -Etypecheck`
`2`	`4`	`package testdata`
`3`	`5`