fix: fixed duplicated dependencies

fix #26

Author: epranka

saofile.js

@@ -212,9 +212,6 @@ module.exports = {
       package.devDependencies.push({
         "@semantic-release/release-notes-generator": "^7.3.4"
       });
-      package.devDependencies.push({
-        "@semantic-release/git": "^7.3.4"
-      });
       package.devDependencies.push({
         "@semantic-release/npm": "^5.3.4"
       });