Merge pull request #47 from numtide/faster-pull-request-builds

speed up pull request build by only building amd64

Author: rcambrj

.github/workflows/pull-request.yaml

@@ -13,4 +13,6 @@ permissions:
 
 jobs:
   run:
-    uses: ./.github/workflows/build-and-release.yaml
+    uses: ./.github/workflows/build-and-release.yaml
+    with:
+      architectures: '["amd64"]'