Bump pyrsistent from 0.19.2 to 0.19.3

Bumps [pyrsistent](https://github.com/tobgu/pyrsistent) from 0.19.2 to 0.19.3.
- [Release notes](https://github.com/tobgu/pyrsistent/releases)
- [Changelog](https://github.com/tobgu/pyrsistent/blob/master/CHANGES.txt)
- [Commits](tobgu/pyrsistent@v0.19.2...v0.19.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -4,7 +4,7 @@ chardet==5.1.0
 idna==3.4
 jsonschema==4.17.3
 kinto-http==11.0.0
-pyrsistent==0.19.2
+pyrsistent==0.19.3
 requests==2.28.1
 ruamel.yaml==0.17.21
 six==1.16.0