ci: add windows arm64 build

.drone.jsonnet

@@ -119,6 +119,7 @@ local PipelineRelease() = {
     StepGoBuild('linux', 'arm64'),
     StepGoBuild('linux', '386'),
     StepGoBuild('windows', 'amd64'),
+    StepGoBuild('windows', 'arm64'),
     StepGoBuild('windows', '386'),
     StepGoBuild('darwin', 'amd64'),
     StepGoBuild('darwin', 'arm64'),

.drone.yml

@@ -176,6 +176,19 @@ steps:
     GOPROXY: https://goproxy.io,direct
   image: golang:1.22
   name: go build windows/amd64
+- commands:
+  - DIST_DIR=$(mktemp -d)
+  - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
+    --always)" -o $DIST_DIR ./cmd/um
+  - mkdir -p dist
+  - command -v zip >/dev/null || (apt update && apt install -y zip)
+  - zip -9 -j -r "dist/um-windows-arm64.zip" $DIST_DIR
+  environment:
+    GOARCH: arm64
+    GOOS: windows
+    GOPROXY: https://goproxy.io,direct
+  image: golang:1.22
+  name: go build windows/arm64
 - commands:
   - DIST_DIR=$(mktemp -d)
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags