.github/workflows: publish arm64 toolchain

Signed-off-by: kari-ts <[email protected]>

Author: kari-ts

.github/workflows/build.yml

@@ -41,7 +41,7 @@ jobs:
         GOOS: ["linux", "darwin", "windows"]
         GOARCH: ["amd64", "arm64"]
     runs-on: ubuntu-24.04
-    if: contains(fromJSON('["push", "workflow_dispatch"]'), github.event_name)
+    if: contains(fromJSON('["push", "workflow_dispatch", "pull_request"]'), github.event_name)
     steps:
     - name: checkout
       id: checkout
@@ -107,9 +107,6 @@ jobs:
       matrix:
         GOOS: ["linux", "darwin", "windows"]
         GOARCH: ["amd64", "arm64"]
-        exclude:
-          - GOOS: windows
-            GOARCH: arm64
     runs-on: ubuntu-24.04
     # We need to do the `always()` hack here as well since the upstream `create_release` job
     # needs it and this seems to transitively require that downstream jobs also have a similar