CI(deps): Update pre-commit hook pre-commit/mirrors-clang-format to v20

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
pre-commit/mirrors-clang-format	repository	major	v18.1.8 -> v20.1.8

Note: The pre-commit manager in Renovate is not supported by the pre-commit maintainers or community. Please do not report any problems there, instead create a Discussion in the Renovate repository if you have any questions.

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Release Notes

pre-commit/mirrors-clang-format (pre-commit/mirrors-clang-format)

v20.1.8

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v20.1.7

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v20.1.6

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v20.1.5

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v20.1.4

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v20.1.3

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v20.1.0

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v19.1.7

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v19.1.6

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v19.1.5

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v19.1.4

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v19.1.3

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v19.1.2

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v19.1.1

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v19.1.0

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[cwhite911]

@echoix this should be ready to merge.

[echoix]

Please take a look at what I flagged

[echoix]

@cwhite911 The markdown fixes were applied on the "wrong" PR. This one isn't ready to be merged yet, as the action we use on CI doesn't have the clang format available yet (and that new Clang version is not generally available in the distro repos, so it's not that urgent to merge; it's not ready in the main repo yet)

So, either cherry pick the fixes in a new PR, or on the other renovate PR for the correct tool.

[cwhite911]

@echoix I've made the changes on the other PR, so we can rebase this PR back to commit a543630

PR recreated from scratch

[renovate]

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