Bump AGP to 7.2.1 and Gradle to 7.5.0

[adinauer]

📜 Description

💡 Motivation and Context

Use latest AGP version as default.
Test against latest versions.

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

🔮 Next steps

[adinauer]

Build is broken as of AGP 7.4.0-alpha04, works with 7.4.0-alpha03. Created #364 to track.