[6.0] Update CODEOWNERS

MaxDesiatov · bnbarham · commit c4a46a41f4b4 · 2024-06-25T13:00:17.000-07:00
Current `CODEOWNERS` file is invalid, as `@apple/swift-branch-managers` is an invalid codeowner team after a transfer to the `swiftlang` org.
diff --git a/CODEOWNERS b/CODEOWNERS
@@ -1,2 +1,2 @@
 # For the release branch @apple/swift-branch-managers needs to approve the changes
-* @apple/swift-branch-managers
+* @swiftlang/swift-branch-managers

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,2 @@`
`1`	`1`	`# For the release branch @apple/swift-branch-managers needs to approve the changes`
`2`		`-* @apple/swift-branch-managers`
	`2`	`+* @swiftlang/swift-branch-managers`