chore(lint): bump golangci-lint to v2.11.1 (#7905)

- Added nolint to plugin/auto/walk.go to avoid a symlink/TOCTOU
  warning, as it needs to follow symlink.
- Replaced a few flagged integer conversions with safe equivalents in
  cache hashing, reuseport socket setup, and TLS arg handling
- Preallocated response rule slices in plugin/rewrite/name.go
- Replaced WriteString(fmt.Sprintf/Sprintln(...)) with direct
  fmt.Fprint* calls
- Removed stale nolint directives from code and tests that are no
  longer needed

Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>

test/file_xfr_test.go

@@ -18,7 +18,7 @@ func TestLargeAXFR(t *testing.T) {
 	sb.WriteString("example.com. IN SOA . . 1 60 60 60 60\n")
 	sb.WriteString("example.com. IN NS ns.example.\n")
 	for i := range numAAAAs {
-		sb.WriteString(fmt.Sprintf("%d.example.com. IN AAAA 2001:db8::1\n", i))
+		fmt.Fprintf(&sb, "%d.example.com. IN AAAA 2001:db8::1\n", i)
 	}
 
 	// Setup the zone file and CoreDNS to serve the zone, allowing zone transfer