Bump mamba-org/setup-micromamba from 1.4.2 to 1.4.3

Bumps [mamba-org/setup-micromamba](https://github.com/mamba-org/setup-micromamba) from 1.4.2 to 1.4.3.
- [Release notes](https://github.com/mamba-org/setup-micromamba/releases)
- [Commits](mamba-org/setup-micromamba@v1.4.2...v1.4.3)

---
updated-dependencies:
- dependency-name: mamba-org/setup-micromamba
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -43,7 +43,7 @@ jobs:
         run: sudo apt-get install dia mscgen inkscape texlive-latex-recommended texlive-latex-extra texlive-font-utils
 
       - name: 🐍 Install Conda environment
-        uses: mamba-org/[email protected].2
+        uses: mamba-org/[email protected].3
         with:
           environment-file: .github/workflows/micromamba/docs.yml
           environment-name: docs