Pin actions versions

Author: sandhose

.github/workflows/ci.yaml

@@ -225,7 +225,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4.2.1
 
       - name: Install toolchain
         run: |
@@ -244,7 +244,7 @@ jobs:
           SQLX_OFFLINE: '1'
 
       - name: Upload archive to workflow
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v4.4.3
         with:
           name: nextest-archive
           path: nextest-archive.tar.zst