fix: git command in shipit (#21)

Co-authored-by: Jan Soukup <[email protected]>

Author: sladg

Diff for: lib/cli.ts

@@ -142,7 +142,7 @@ program
 		// So we are overwriting last commit message and pushing to release branch.
 		await git
 			//
-			.raw(`--message "Release: ${nextTagWithPrefix}"`, '--amend')
+			.raw('commit', `--message "Release: ${nextTagWithPrefix}"`, '--amend')
 			.push(remote.name, `${branch.current}:${releaseBranch}`)
 
 		// Create tag and push it to master.