Merge branch '5.4' into 6.2

* 5.4:
  Use Doctor RST 1.45.0 and new Rule `RemoveTrailingWhitespace`

Author: OskarStark

.doctor-rst.yaml

@@ -44,6 +44,7 @@ rules:
     only_backslashes_in_use_statements_in_php_code_block: ~
     ordered_use_statements: ~
     php_prefix_before_bin_console: ~
+    remove_trailing_whitespace: ~
     replace_code_block_types: ~
     replacement: ~
     short_array_syntax: ~

.github/workflows/ci.yaml

@@ -73,7 +73,7 @@ jobs:
                     key: ${{ runner.os }}-doctor-rst-${{ steps.extract_base_branch.outputs.branch }}
 
             -   name: "Run DOCtor-RST"
-                uses: docker://oskarstark/doctor-rst:1.44.1
+                uses: docker://oskarstark/doctor-rst:1.45.0
                 with:
                     args: --short --error-format=github --cache-file=/github/workspace/.cache/doctor-rst.cache