ci: remove 386 binaries (#1393)

.github/workflows/release.yaml

@@ -11,12 +11,7 @@ jobs:
         # build and publish in parallel: linux/386, linux/amd64, linux/arm64,
         # windows/386, windows/amd64, windows/arm64, darwin/amd64, darwin/arm64
         goos: [linux, windows, darwin]
-        goarch: ["386", amd64, arm64]
+        goarch: [amd64, arm64]
-        exclude:
-          - goarch: "386"
-            goos: darwin
-          - goarch: "386"
-            goos: windows
     steps:
       - uses: actions/checkout@v2
       - uses: wangyoucao577/go-release-action@v1.22