Fix git rev-parse usage

it needs ^{} at the end in order to extract a tagged commit from an annotated tag.
Using bare ^ makes it return the parent commit of a tagged commit.

lib/fastlane/plugin/ddg_apple_automation/actions/start_new_release_action.rb

@@ -56,7 +56,7 @@ def self.details
 * pushes the changes to the remote repository,
 * creates a new Asana release task based off the provided task template,
 * updates the Asana release task with tasks included in the release.
-* if it's a hotfix release, it will create a hotfix branch, update the build number and push changes
+For hotfix releases, the action creates a hotfix branch off the latest public release tag, updates the build number and pushes the changes.
         DETAILS
       end
 

lib/fastlane/plugin/ddg_apple_automation/helper/ddg_apple_automation_helper.rb

@@ -152,7 +152,7 @@ def self.create_hotfix_branch(platform, source_version, new_version)
         UI.abort_with_message!("Branch #{branch_name} already exists in this repository. Aborting.") unless existing_branch.empty?
 
         if Helper.is_ci?
-          sha = Actions.sh("git", "rev-parse", "#{source_version}^").strip
+          sha = Actions.sh("git", "rev-parse", "#{source_version}^{}").strip
           repo = Helper::GitHelper.repo_name(platform)
           Actions.sh("gh", "api", "--method", "POST", "/repos/#{repo}/git/refs", "-f", "ref=refs/heads/#{branch_name}", "-f", "sha=#{sha}")
           Actions.sh("git", "fetch", "origin")

spec/ddg_apple_automation_helper_spec.rb

@@ -168,7 +168,7 @@ def load_file(file)
         platform = "macos"
         allow(Fastlane::Helper).to receive(:is_ci?).and_return(true)
         allow(Fastlane::Actions).to receive(:sh).with("git", "branch", "--list", branch_name).and_return("")
-        allow(Fastlane::Actions).to receive(:sh).with("git", "rev-parse", "#{source_version}^").and_return(sha)
+        allow(Fastlane::Actions).to receive(:sh).with("git", "rev-parse", "#{source_version}^{}").and_return(sha)
         allow(Fastlane::Actions).to receive(:sh).with(
           "gh", "api", "--method", "POST",
           "/repos/#{repo}/git/refs",
@@ -184,7 +184,7 @@ def load_file(file)
         expect(result).to eq(branch_name)
 
         expect(Fastlane::Actions).to have_received(:sh).with("git", "branch", "--list", branch_name)
-        expect(Fastlane::Actions).to have_received(:sh).with("git", "rev-parse", "#{source_version}^")
+        expect(Fastlane::Actions).to have_received(:sh).with("git", "rev-parse", "#{source_version}^{}")
         expect(Fastlane::Actions).to have_received(:sh).with(
           "gh", "api", "--method", "POST",
           "/repos/#{repo}/git/refs",