Inverse mypy and more mypy fixes

[NickM-27]

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Proposed change

• inverse the mypy file to specifically disable type checking everywhere that we currently get errors, making it easier to see what is left and where the gaps are
• more mypy fixes
• fix PR template check for dependabot

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code
• Documentation Update

For new features

• There is an existing feature request or discussion with community interest for this change.
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• No AI tools were used in this PR.
• AI tools were used in this PR. Details below:

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Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I can explain every line of code in this PR if asked.
• UI changes including text have used i18n keys and have been added to the en locale.
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