Workflow to use latest silabs docker image

Author: jmartinez-silabs

.github/workflows/examples-efr32.yaml

@@ -40,7 +40,7 @@ jobs:
     if: github.actor != 'restyled-io[bot]'
 
     container:
-      image: ghcr.io/project-chip/chip-build-efr32:54
+      image: ghcr.io/project-chip/chip-build-efr32:56
       volumes:
         - "/tmp/bloat_reports:/tmp/bloat_reports"
     steps:

.github/workflows/release_artifacts.yaml

@@ -64,7 +64,7 @@ jobs:
         runs-on: ubuntu-latest
 
         container:
-            image: ghcr.io/project-chip/chip-build-efr32:54
+            image: ghcr.io/project-chip/chip-build-efr32:56
         steps:
             - name: Checkout
               uses: actions/checkout@v4