- Clean up the SPEC file

- update to 1.12.0
 * Added new feature to the "code formatter" function which allows standalone
   executable tools to be run against code, without going through the Python
   interpreter.  Known as the `exec` runner, it complements the existing
   `console_scripts` runner by allowing non-Python tools such as `ruff` to
   be used.
 * Change the default value of `.EnvironmentContext.configure.compare_type` to `True`.
   As Alembic's autogenerate for types was dramatically improved in
   version 1.4 released in 2020, the type comparison feature is now much
   more reliable so is now enabled by default.
 * Fixed issue where the `ForeignKeyConstraint.match` parameter would not be
   rendered in autogenerated migrations.
 * Fixed issue where the `revision_environment` directive in `alembic.ini`
   was ignored by the `alembic merge` command, leading to issues when other
   configurational elements depend upon `env.py` being invoked within the
   command.
 * Added support for `op.drop_constraint()` to support PostgreSQL
   `ExcludeConstraint` objects, as well as other constraint-like objects
   that may be present in third party dialects, by resolving the `type_`
   parameter to be `None` for this case.   Autogenerate has also been
   enhanced to exclude the `type_` parameter from rendering within this
   command when  `type_` is `None`.

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