test: adjust WedDav preview test case for Devanagari script [full-ci] (#41672)

test: adjust WedDav preview test case for Devanagari script

This acceptance test case use Devenagari script as an example of
a non-Latin script. It confirms that a preview of a text file
containing Devanagari script can be produced in PNG format.

The preview used in the test scenario has been made bigger (64x64).
That makes the graphic resolution good enough that I can manually
recognise the characters rendered in the resulting PNG image, and
confirm that they are a good rendering of the text.

Note: depending on the installed environment, some Devanagari
ligatures may not be rendered correctly. That also applies for
other scripts. If an installation wants to accurately support
rendering of a wide range of scripts, then they need to organise
to have suitable additional libraries installed that will support
those scripts. The purpose of this test scenario is not to ensure
that all scripts work correctly. The purpose is just to ensure
that some combination of non-Latin characters can be correctly
processed, stored as a preview, and the binary content of the
preview is correctly returned to the user that called the API.

Author: phil-davis

tests/acceptance/features/apiWebdavPreviews/previews.feature

@@ -207,14 +207,14 @@ Feature: previews of files downloaded through the webdav API
     Then the HTTP status code should be "204"
     And as user "Brian" the preview of "/Shares/parent.txt" with width "32" and height "32" should have been changed
 
-  @issue-41480 @skip
+
   Scenario: it should update the preview content if the file content is updated (content with UTF chars)
     Given user "Alice" has uploaded file "filesForUpload/lorem.txt" to "/lorem.txt"
-    And user "Alice" has uploaded file with content "सिमसिमे पानी" to "/lorem.txt"
-    When user "Alice" downloads the preview of "/lorem.txt" with width "32" and height "32" using the WebDAV API
+    And user "Alice" has uploaded file with content "मेरो पानी" to "/lorem.txt"
+    When user "Alice" downloads the preview of "/lorem.txt" with width "64" and height "64" using the WebDAV API
     Then the HTTP status code should be "200"
-    And the downloaded image should be "32" pixels wide and "32" pixels high
-    And the downloaded preview content should match with "सिमसिमे-पानी.png" fixtures preview content
+    And the downloaded image should be "64" pixels wide and "64" pixels high
+    And the downloaded preview content should match with "मेरो-पानी.png" fixtures preview content
 
 
   Scenario: updates to a file should change the preview for both sharees and sharers