Update golangci-lint to version 1.31.0 (#13102)

This PR updates golangci-lint to the latest version 1.31.0.

The upgrade introduced a new check for which I've fixed or disabled most cases.

Signed-off-by: kolaente <k@knt.li>

routers/utils/utils.go

@@ -47,7 +47,7 @@ func SanitizeFlashErrorString(x string) string {
 		x = "..." + string(runes[len(runes)-512:])
 	}
 
-	return strings.Replace(html.EscapeString(x), "\n", "<br>", -1)
+	return strings.ReplaceAll(html.EscapeString(x), "\n", "<br>")
 }
 
 // IsExternalURL checks if rawURL points to an external URL like http://example.com