chore(deps): Bump sphinxext-opengraph from 0.7.2 to 0.7.3 (#1794)

Bumps [sphinxext-opengraph](https://github.com/wpilibsuite/sphinxext-opengraph) from 0.7.2 to 0.7.3.
- [Release notes](https://github.com/wpilibsuite/sphinxext-opengraph/releases)
- [Commits](wpilibsuite/sphinxext-opengraph@v0.7.2...v0.7.3)

---
updated-dependencies:
- dependency-name: sphinxext-opengraph
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/docs.txt

@@ -2,7 +2,7 @@ sphinx==5.3.0
 sphinxcontrib_trio==1.1.2
 sphinxcontrib-websupport==1.2.4
 myst-parser==0.18.1
-sphinxext-opengraph==0.7.2
+sphinxext-opengraph==0.7.3
 sphinx-copybutton==0.5.1
 furo@ git+https://github.com/BobDotCom/furo@temp
 sphinx-autodoc-typehints==1.19.5