ci: improve release process and test robustness

- Add .xz files to the checksum in .goreleaser.yaml

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

Author: appleboy

.goreleaser.yaml

@@ -83,6 +83,8 @@ archives:
 
 checksum:
   name_template: 'checksums.txt'
+  extra_files:
+      - glob: ./**.xz
 
 snapshot:
   name_template: "{{ incpatch .Version }}"