Update actions/checkout digest to de0fac2 (#75)

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

Author: renovate[bot]

.github/workflows/release.yaml

@@ -36,7 +36,7 @@ jobs:
           echo "name=${{ github.event.repository.name }}-${VERSION}" >> "$GITHUB_OUTPUT"
 
       - name: Checkout
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           submodules: true
           path: ${{ steps.version.outputs.name }}

.github/workflows/unit-test.yaml

@@ -61,7 +61,7 @@ jobs:
 
     steps:
     - name: Checkout component
-      uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       with:
         path: component
     - name: Restore cached HOOMD-blue build
@@ -75,7 +75,7 @@ jobs:
         apt-get update
         apt-get install git --yes
     - name: Checkout HOOMD-blue
-      uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       with:
         repository: glotzerlab/hoomd-blue
         path: hoomd-blue