.gitignore: add PHPUnit cache file

jrfnl · jrfnl · commit 100654341cf2 · 2021-11-04T12:38:00.000+01:00
Since PHPUnit 8.x, PHPUnit generates a cache file. This file should not be committed.
diff --git a/.gitignore b/.gitignore
@@ -1,3 +1,4 @@
 vendor
 composer.lock
 phpunit.xml
+.phpunit.result.cache
