deps: update actions/checkout digest to b4ffde6 (#1546)

Author: renovate-bot

.github/workflows/integration-tests-against-emulator.yaml

@@ -16,7 +16,7 @@ jobs:
           - 9020:9020
 
     steps:
-    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
     - uses: stCarolas/setup-maven@v4
       with:
         maven-version: 3.8.1