Update .github/workflows/release-image.yaml

Signed-off-by: Ben Leggett <benjamin@edera.io>

Author: bleggett

.github/workflows/release-image.yaml

@@ -26,7 +26,7 @@ jobs:
         uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
 
       - name: checkout repository
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false