removed ts-jest dependency (#6)

Author: AlexGalichenko

.github/workflows/pull-request.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
       - run: npm ci
       - run: npm run build
       - run: npm run test