[internal] Update GitHub Actions workflow files (#234)

Author: pulumi-bot

scripts/upstream.sh

@@ -91,14 +91,12 @@ start_rebase() {
 
   for patch in ../patches/*.patch; do
     echo "Applying $patch"
-    if ! git apply --3way "$patch"; then
+    if ! git am --3way "$patch"; then
       echo
       echo "Failed to apply patch. Please run 'make upstream.rebase FROM=$TAG' where '$TAG' allows the patch set to apply cleanly"
       echo
       exit 1
     fi
-    patch=${patch#../patches/*-}
-    git commit -am "${patch%.patch}"
   done
 
   touch ../rebase-in-progress