Colon (:) shouldn't be allowed in custom revision id, as it is used as revision range

[PatilHrushikesh]

I created a revision named REV:1, when I tried to upgrade to it using
alembic upgrade REV:1
It showed error
FAILED" Range revision not allowed

Expected: Don't allow revision name containing colon

[sqla-tester]

Kim Wooseok has proposed a fix for this issue in the main branch:

Add colon (:) to invalid char for revision name add unittest https://gerrit.sqlalchemy.org/c/sqlalchemy/alembic/+/6266