I ran into a similar issue with Android builds in Flutter, and what helped me was a related discussion on GitHub. You might find these links useful:
• Original issue: Flutter Downloads Old Build (#41462)
• Continued thread: Further discussion (#63533 - comment)

Hopefully, this points you in the right direction like it did for me!

Disclaimer: I’m still new to replying to Stack Overflow posts, so apologies if this post isn’t perfect. I’d appreciate any tips on how to improve my responses.