chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/semgrep.yml

@@ -24,5 +24,5 @@ jobs:
     container:
       image: returntocorp/semgrep@sha256:bacb1190716dab2b1708dc63c5bf11f6014c16511e5117f83592acbc5530087a
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
     - run: semgrep ci