Bump mkdocs-redirects from 1.2.0 to 1.2.1

Bumps mkdocs-redirects from 1.2.0 to 1.2.1.

Release notes

Sourced from mkdocs-redirects's releases.

v1.2.1

• Fix deprecation warning about warning_filter

Commits

• 313c776 Release 1.2.1 (#56)
• f153f26 Revert "Delete empty init.py - it doesn't do anything with modern Python"
• cd8d7fb Delete empty init.py - it doesn't do anything with modern Python
• 844a79f Fix code formatting according to new version of Black
• b7a3353 CI: ubuntu-latest doesn't have Python 3.6
• b4e4af9 Chore dependency upgrade
• 13f473f Drop deprecated warning_filter - no-op since MkDocs 1.2
• See full diff in compare view