Merge bitcoin/bitcoin#28402: ci: Bump actions/checkout version

f10acec ci: Bump `actions/checkout` version (Hennadii Stepanov)

Pull request description:

  See: https://github.com/actions/checkout/releases/tag/v4.0.0.

ACKs for top commit:
  MarcoFalke:
    lgtm ACK f10acec

Tree-SHA512: fc71876ee1df881a61295fc3b3cd3dac0c17b3651ad725076d3ff0b8975bab0d37c03cd421e6e88ddcf2e28910c96e3f1fa8fd5d5280e06e5a7a7ec683f7b930

Author: fanquake

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Clang version
         run: clang --version
@@ -90,7 +90,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Fix Visual Studio installation
         # See: https://github.com/actions/runner-images/issues/7832#issuecomment-1617585694.