Bump book/external/Sphinx-Image-Inverter from 6789ae2 to 20d8d6d

Bumps [book/external/Sphinx-Image-Inverter](https://github.com/TeachBooks/Sphinx-Image-Inverter) from `6789ae2` to `20d8d6d`.
- [Release notes](https://github.com/TeachBooks/Sphinx-Image-Inverter/releases)
- [Commits](6789ae2128...20d8d6d128)

---
updated-dependencies:
- dependency-name: book/external/Sphinx-Image-Inverter
  dependency-type: direct:production
...

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This commit is contained in:
dependabot[bot] 2025-01-14 07:13:19 +00:00 • committed by GitHub
parent cb21720886
commit a65d33b53a
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@ -1 +1 @@
Subproject commit 6789ae2128e183874f758b05b897580aba587689
Subproject commit 20d8d6d1280edbb2e6df9639fe66c28b58d2e63c