Increment allowed warnings by one

The number of warnings increased because of a new version of
'com.google.android.exoplayer:exoplayer' is available. But the new version
enforces SDK 31.

Signed-off-by: Tim Krüger <t@timkrueger.me>

scripts/analysis/lint-results.txt

@@ -1,2 +1,2 @@
 DO NOT TOUCH; GENERATED BY DRONE
-      <span class="mdl-layout-title">Lint Report: 1 error and 223 warnings</span>
+      <span class="mdl-layout-title">Lint Report: 1 error and 224 warnings</span>