Updating action/checkout to latest major version

.github/workflows/base_benchmarks.yml

@@ -9,7 +9,7 @@ jobs:
       checks: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: bencherdev/bencher@main
       - name: Track base branch benchmarks with Bencher
         run: |

.github/workflows/fork_pr_benchmarks_closed.yml

@@ -7,7 +7,7 @@ jobs:
     name: Archive closed fork PR branch with Bencher
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: bencherdev/bencher@main
       - name: Archive closed fork PR branch with Bencher
         run: |

.github/workflows/fork_pr_benchmarks_run.yml

@@ -9,7 +9,7 @@ jobs:
     name: Run Fork PR Benchmarks
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Mock Benchmarking
         run: |
           /bin/echo '{ "bencher::mock_0": { "latency": { "value": 1.0 } } }' > benchmark_results.json

.github/workflows/pr_benchmarks.yml

@@ -11,7 +11,7 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: bencherdev/bencher@main
       - name: Track PR Benchmarks with Bencher
         run: |

.github/workflows/pr_benchmarks_closed.yml

@@ -9,7 +9,7 @@ jobs:
     if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: bencherdev/bencher@main
       - name: Archive closed PR branch with Bencher
         run: |