Update checkout and upload-artifact actions

This gets rid of on of the deprecation warnings

.github/workflows/compilation.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     container: ghcr.io/pspdev/psptoolchain:latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Install dependencies
       run: |
@@ -39,7 +39,7 @@ jobs:
     
     - name: Upload Samples artifacts
       if: ${{ success() }}
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: samples-${{ steps.slug.outputs.sha8 }}
         path: samples.tar.gz