Describe the bug
When posting a bounty the hours worked must be an integer, otherwise you get the error "unable to create bounty please try again later"

To Reproduce
Try creating a bounty with a non-integer value in that field.
Expected behavior
Either the field should have validation or non-integer values should be allowed.
Cause
Probably related to:
https://sentry.io/organizations/gitcoin/issues/1850523990/?project=1398424&query=is%3Aunresolved
ValueError: invalid literal for int() with base 10: '0.5'