Bump alembic from 1.6.5 to 1.8.1 in /base

[dependabot[bot]]

Bumps alembic from 1.6.5 to 1.8.1.

Release notes

Sourced from alembic's releases.

1.8.1

Released: July 13, 2022

bug

• [bug] [sqlite] Fixed bug where the SQLite implementation of Operations.rename_table() would render an explicit schema name for both the old and new table name, which while is the standard ALTER syntax, is not accepted by SQLite's syntax which doesn't support a rename across schemas. In particular, the syntax issue would prevent batch mode from working for SQLite databases that made use of attached databases (which are treated as "schemas" in SQLAlchemy).

  References: #1065

• [bug] [batch] Added an error raise for the condition where Operations.batch_alter_table() is used in --sql mode, where the operation requires table reflection, as is the case when running against SQLite without giving it a fixed Table object. Previously the operation would fail with an internal error. To get a "move and copy" batch operation as a SQL script without connecting to a database, a Table object should be passed to the Operations.batch_alter_table.copy_from parameter so that reflection may be skipped.

  References: #1021

1.8.0

Released: May 31, 2022

changed

• [changed] [installation] Alembic 1.8 now supports Python 3.7 and above.

  References: #1025

• [changed] [environment] The "Pylons" environment template has been removed as of Alembic 1.8. This template was based on the very old pre-Pyramid Pylons web framework which has been long superseded by Pyramid.

  References: #987

feature

• [feature] [typing] PEP 484 typing annotations have been added to the env.py and

... (truncated)

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