build: improve compression and update GitHub actions

- Add `dist` to .gitignore for gorelease binary folder
- Replace tar command with xz command in .goreleaser.yaml for better compression

Signed-off-by: appleboy <appleboy.tw@gmail.com>

.gitignore

@@ -8,3 +8,5 @@ coverage.txt
 # MS VSCode
 .vscode
 __debug_bin
+# gorelease binary folder
+dist

.goreleaser.yaml

@@ -71,10 +71,8 @@ builds:
   no_unique_dist_dir: true
   hooks:
     post:
-      - cmd: tar -cJf {{ .Path }}.xz {{ .Path }}
+      - cmd: xz -k -9 {{ .Path }}
         dir: ./dist/
-        env:
-          - XZ_OPT=-9
       - cmd: sh .goreleaser.checksum.sh {{ .Path }}
       - cmd: sh .goreleaser.checksum.sh {{ .Path }}.xz