chore(deps): update actions/checkout digest to b4ffde6 (#658)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/merge.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@8530928916aaef40f59e6f221989ccb31f5759e7
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
     - name: Set up JDK 8
       uses: actions/setup-java@78078da0cd035d0d177cc2cb696e05d96fba7d11
       with:

.github/workflows/pullrequest.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the code
-        uses: actions/checkout@8530928916aaef40f59e6f221989ccb31f5759e7
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
       - name: Set up JDK 8
         uses: actions/setup-java@78078da0cd035d0d177cc2cb696e05d96fba7d11

.github/workflows/release.yml

@@ -29,7 +29,7 @@ jobs:
       # These steps are only run if this was a merged release-please PR
       - name: checkout
         if: ${{ steps.release.outputs.releases_created }}
-        uses: actions/checkout@8530928916aaef40f59e6f221989ccb31f5759e7
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
       - name: Set up JDK 8
         if: ${{ steps.release.outputs.releases_created }}
         uses: actions/setup-java@78078da0cd035d0d177cc2cb696e05d96fba7d11

.github/workflows/static-code-scanning.yaml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@8530928916aaef40f59e6f221989ccb31f5759e7
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL