workflows: Re-enable tests job

Author: euanh

.github/workflows/pull_request.yml

@@ -5,11 +5,11 @@ on:
     types: [opened, reopened, synchronize]
 
 jobs:
-  # tests:
-  #   name: Test
-  #   uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
-  #   with:
-  #     linux_pre_build_command: apt-get update && apt-get install -y locales locales-all libsqlite3-dev
+  tests:
+    name: Test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      linux_pre_build_command: apt-get update && apt-get install -y locales locales-all libsqlite3-dev
   soundness:
     name: Soundness
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main