[stable20] SCSSCacher - Lock should not be removed

[backportbot-nextcloud]

backport of #23488

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 34253: failure

mysql5.6-php7.2

Show full log

There were 2 warnings:

1) Test\Files\ViewTest::testRenameFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static

2) Test\Files\ViewTest::testCopyFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static

--

There was 1 failure:

1) Test\Files\Cache\QuerySearchHelperTest::testComparison with data set #13 (OC\Files\Search\SearchBinaryOperator Object (...), array(1))
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
-    0 => 0
+    0 => '450'
 )

/drone/src/tests/lib/Files/Cache/QuerySearchHelperTest.php:212