Update actions/checkout and actions/upload-artifact to v4

Author: scribam

.github/workflows/compilation.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
 
@@ -26,7 +26,7 @@ jobs:
         make install DESTDIR=../vita-toolchain
     - name: Upload artifacts
       if: ${{ success() }}
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: vita-toolchain-${{ steps.core.outputs.sha8 }}
         path: ./vita-toolchain/usr/local/