Bump actions/checkout from 3 to 4 (#935)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to
4.
- [Release notes](https://github.com/actions/checkout/releases)
-
[Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

.github/workflows/build-kernel-arcvm.yml

@@ -59,7 +59,7 @@ jobs:
           sudo ln -s --force /usr/bin/clang++-$LLVM_VERSION /usr/bin/clang++
 
       - name: Checkout KernelSU
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: KernelSU
           fetch-depth: 0