Bump "katex" package version

[updateclibot]

Bump "katex" package version

Bump "katex" package version to 0.16.45

ran shell command "npm install --package-lock-only --dry-run=$DRY_RUN katex@0.16.45"

v0.16.45

## [0.16.45](https://github.com/KaTeX/KaTeX/compare/v0.16.44...v0.16.45) (2026-04-05)


### Bug Fixes

* wrap vcenter mpadded in mrow for valid MathML ([#4193](https://github.com/KaTeX/KaTeX/issues/4193)) ([ee66b78](https://github.com/KaTeX/KaTeX/commit/ee66b78d24340edbbd05b08a4a429ce9ed158b25)), closes [#4078](https://github.com/KaTeX/KaTeX/issues/4078)

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