Use full unformatted subject message

We want to use danger js locally to check the format of conventional commits for the commit messages. Due to that, we need to have a full unformatted subject line. Similar issue is explained in #977

source/platforms/git/localGetCommits.ts

@@ -14,7 +14,7 @@ const authorDate = "%ai"
 const committerName = "%cn"
 const committerEmail = "%ce"
 const committerDate = "%ci"
-const message = "%f" // this is subject, not message, so it'll only be one line
+const message = "%s" // this is subject, not message, so it'll only be one line
 
 const author = `"author": {"name": "${authorName}", "email": "${authorEmail}", "date": "${authorDate}" }`
 const committer = `"committer": {"name": "${committerName}", "email": "${committerEmail}", "date": "${committerDate}" }`