Update actions/checkout digest to 71cf226

Author: renovate[bot]

.github/workflows/rust.yml

@@ -17,7 +17,7 @@ jobs:
   check-style:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@71cf2267d89c5cb81562390fa70a37fa40b1305e
       - name: Report cargo version
         run: cargo --version
       - name: Report rustfmt version
@@ -28,7 +28,7 @@ jobs:
   clippy-lint:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@71cf2267d89c5cb81562390fa70a37fa40b1305e
       - name: Report cargo version
         run: cargo --version
       - name: Report Clippy version
@@ -40,7 +40,7 @@ jobs:
   check-docs:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@71cf2267d89c5cb81562390fa70a37fa40b1305e
       - name: Report cargo version
         run: cargo --version
       - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
@@ -58,7 +58,7 @@ jobs:
           - features: all
             feature_flags: --all-features
     steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@71cf2267d89c5cb81562390fa70a37fa40b1305e
       - name: Report cargo version
         run: cargo --version
       - name: Report rustc version