Update actions/checkout digest to de0fac2 (#114)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>

Author: elastic-renovate-prod[bot]

.github/workflows/unit-test-on-pull-request.yml

@@ -23,7 +23,7 @@ jobs:
         check-latest: true
       id: go
     - name: Check out
-      uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
     - name: Linter
       run: |
           make lint
@@ -44,7 +44,7 @@ jobs:
         check-latest: true
       id: go
     - name: Check out
-      uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
     - name: Run Test
       run: |
           make check
@@ -65,7 +65,7 @@ jobs:
           check-latest: true
         id: go
       - name: Check out
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       - name: Run Benchmarks
         run: |
           GOMAXPROCS=100 make bench
@@ -88,7 +88,7 @@ jobs:
           check-latest: true
         id: go
       - name: Check out
-        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           ref: ${{ github.head_ref }}
       - name: Build