Fix labeler config for stylelint (#36199)

Followup to rename in
b8f1c9f#diff-cb3b3f608024ee0bd45ea10b08ca6d3fcf40523a3d40182a438937231d8b8072.

Author: silverwind

.github/labeler.yml

@@ -46,7 +46,7 @@ modifies/internal:
           - ".gitpod.yml"
           - ".markdownlint.yaml"
           - ".spectral.yaml"
-          - "stylelint.config.js"
+          - "stylelint.config.ts"
           - ".yamllint.yaml"
           - ".github/**"
           - ".gitea/**"
@@ -89,4 +89,4 @@ topic/code-linting:
           - ".markdownlint.yaml"
           - ".spectral.yaml"
           - ".yamllint.yaml"
-          - "stylelint.config.js"
+          - "stylelint.config.ts"