chore(jira): update version

Author: kherP

README.md

@@ -12,7 +12,7 @@ To update the fields of an issue you need to specify an issue key and field data
 
 ```yaml
 - name: Comment on issue
-  uses: kherP/[email protected].11
+  uses: kherP/[email protected].12
   with:
   issue: INC-2
   fields: customfield_10006::https://www.google.com,customfield_10007::44

dist/index.js

@@ -71,16 +71,17 @@ class Jira {
         }
         return newData;
       }, {});
+      const body = JSON.parse(JSON.stringify({
+        fields: parsedData
+      }));
 			return this.fetch(
 				"updateField",
 				{
 					pathname: `/rest/api/2/issue/${issueId}`,
 				},
 				{
 					method: "PUT",
-					body: {
-            fields: parsedData
-          },
+					body,
 				},
         true
 			);