fix: revert github unit tests action (#1820)

.github/workflows/test-pr.yml

@@ -1,7 +1,11 @@
 name: Tests
 on:
   push:
+    paths:
+      - "keep/**"
   pull_request:
+    paths:
+      - "keep/**"
   workflow_dispatch:
 permissions:
   actions: write
@@ -17,24 +21,8 @@ env:
   ELASTIC_PASSWORD: keeptests
 
 jobs:
-  check-before-unit-tests:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-      - name: Check if relevant files have changed
-        id: file_check
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          if ! git diff --name-only $BASE_SHA $HEAD_SHA | grep -q '^keep/'; then
-            echo "No relevant changes, cancelling job."
-            exit 78
-          fi
   tests:
     runs-on: ubuntu-latest
-    needs:
-      - check-before-unit-tests
     services:
       mysql:
         image: mysql:5.7