Bump matplotlib from 3.7.2 to 3.7.3 in /.github/dependabot

Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.7.2 to 3.7.3.
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.7.2...v3.7.3)

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

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

.github/dependabot/constraints.txt

@@ -3,7 +3,7 @@ EXtra-data==1.14.0
 EXtra-geom==1.10.0
 ipython==8.15.0
 kafka-python==2.0.2
-matplotlib==3.7.2
+matplotlib==3.7.3
 mplcursors==0.5.2
 mpl-pan-zoom==1.0.0
 numpy==1.25.2