chore:  upgraded checkout to v4

as in the subject. upgrade to v4 (node 20)

.github/workflows/tests.yaml

diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 43c05cd..775f543 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -47,7 +47,7 @@
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Add Missing plugin
         run: |
           # fix for missing auth-plugin