Revert "ci: Don't run pr test suite on non-code changes (#4992)"

This reverts commit 8416102.

Author: desmondcheongzx

.github/workflows/pr-test-suite.yml

@@ -3,39 +3,8 @@ name: PR test suite
 on:
   push:
     branches: [main]
-    paths-ignore:
-    - '.vscode/**'
-    - 'ci/**'
-    - 'docs/**'
-    - '.git-blame-ignore-revs'
-    - '.gitignore'
-    - '.lldbinit'
-    - '.readthedocs.yaml'
-    - 'CODE_OF_CONDUCT.md'
-    - 'CONTRIBUTING.md'
-    - 'LICENSE'
-    - 'README.rst'
-    - 'SECURITY.md'
-    - 'codecov.yml'
-    - 'mkdocs.yml'
-
   pull_request:
     branches: [main]
-    paths-ignore:
-    - '.vscode/**'
-    - 'ci/**'
-    - 'docs/**'
-    - '.git-blame-ignore-revs'
-    - '.gitignore'
-    - '.lldbinit'
-    - '.readthedocs.yaml'
-    - 'CODE_OF_CONDUCT.md'
-    - 'CONTRIBUTING.md'
-    - 'LICENSE'
-    - 'README.rst'
-    - 'SECURITY.md'
-    - 'codecov.yml'
-    - 'mkdocs.yml'
   # `workflow_dispatch` allows CodSpeed to trigger backtest
   # performance analysis in order to generate initial data.
   workflow_dispatch: