Bump contourpy from 1.3.0 to 1.3.1 in /.github/dependabot

Bumps [contourpy](https://github.com/contourpy/contourpy) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/contourpy/contourpy/releases)
- [Changelog](https://github.com/contourpy/contourpy/blob/main/docs/changelog.rst)
- [Commits](contourpy/contourpy@v1.3.0...v1.3.1)

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

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

.github/dependabot/constraints.txt

@@ -1,5 +1,5 @@
 cfelpyutils==2.1.0
-contourpy==1.3.0
+contourpy==1.3.1
 cycler==0.12.1
 EXtra-data==1.18.0
 EXtra-geom==1.12.0