Update the used pglast version so we get access to the PostgreSQL 14 parser.
What's Changed
- Bump pglast to >= 4.1 by @svenklemm in #79
- Bump github action versions used in CI by @svenklemm in #80
- Require pytest >= 7.2.0 by @svenklemm in #81
- Remove py from requirements by @svenklemm in #82