0.4.0

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