Bump actions/download-artifact from 3 to 4

Author: flip1995

.github/workflows/clippy_bors.yml

@@ -162,7 +162,7 @@ jobs:
         find $DIR ! -executable -o -type d ! -path $DIR | xargs rm -rf
 
     - name: Upload Binaries
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: binaries
         path: target/debug
@@ -202,7 +202,7 @@ jobs:
 
     # Download
     - name: Download target dir
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: binaries
         path: target/debug