[NT-1449] Update upload-dsyms binary

[justinswart]

📲 What

Updates our CI to use a newer version of the upload-dyms binary that is bundled with the Firebase Crashlytics SDK.

🤔 Why

This is to ensure that future versions of our app continue to report crashes and that we're able to resymbolicate those crashes.

🛠 How

• Updated the upload-dsyms binary.
• Included references to the required plist files in our Fastfile config.
• Added these plist files to our native-secrets repo: https://github.com/kickstarter/native-secrets/pull/72.
• Added the app IDs as environment vars in our CircleCI configuration.
• Updated our Fastlane gem and AppCenter plugin.

Note: I've tested this locally, upon merging this PR we should also receive confirmation that the dSYMs uploaded successfully when the next beta is built and uploaded.