v31.1.0

Full changelog

• General:
  • The regex crate is no longer required, making the Glean binary smaller (#949)
  • Record upload failures into a new metric (#967)
  • Log FFI errors as actual errors (#935)
  • Limit the number of upload retries in all implementations (#953, #968)
• Python
  • Additional safety guarantees for applications that use Python threading (#962)