ci: change gpg version

Author: flexwie

.goreleaser.yml

@@ -78,7 +78,8 @@ checksum:
   name_template: "checksums.txt"
 
 binary_signs:
-  - args:
+  - cmd: gpg2
+    args:
       [
         "-u",
         "{{ .Env.GPG_KEYID }}",
@@ -90,6 +91,7 @@ binary_signs:
 
 signs:
   - artifacts: checksum
+    cmd: gpg2
     args:
       [
         "--batch",