Revert "Override language for SAST scan"

This reverts commit c8cb93f.

I've now manually invoked CodeQL through the admin settings screen
for this repo in GitHub, explicitly opting into just JavaScript.
Hoping this reusable workflow will now run.

![Screenshot 2024-05-29 at 09 50 26](https://github.com/alphagov/govuk-browser-extension/assets/5111927/114bb17b-ac2e-4f42-8560-a0df69a49178)

.github/workflows/ci.yml

@@ -12,13 +12,6 @@ jobs:
     uses: alphagov/govuk-infrastructure/.github/workflows/codeql-analysis.yml@main
     permissions:
       security-events: write
-    strategy:
-      matrix:
-        # Override automatic language detection as the job was for some reason detecting
-        # Ruby and then failing to scan. See https://github.com/alphagov/govuk-browser-extension/actions/runs/8876065845/job/24366823308?pr=196
-        language: ["javascript-typescript"]
-    with:
-      target: ${{ matrix.language }}
 
   dependency-review:
     name: Dependency Review scan