Bump certifi from 2020.12.5 to 2023.7.22

[dependabot[bot]]

Bumps certifi from 2020.12.5 to 2023.7.22.

Commits

• 8fb96ed 2023.07.22
• afe7722 Bump actions/setup-python from 4.6.1 to 4.7.0 (#230)
• 2038739 Bump dessant/lock-threads from 3.0.0 to 4.0.1 (#229)
• 44df761 Hash pin Actions and enable dependabot (#228)
• 8b3d7ba 2023.05.07
• 53da240 ci: Add Python 3.12-dev to the testing (#224)
• c2fc3b1 Create a Security Policy (#222)
• c211ef4 Set up permissions to github workflows (#218)
• 2087de5 Don't let deprecation warning fail CI (#219)
• e0b9fc5 remove paragraphs about 1024-bit roots from README
• Additional commits viewable in compare view

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