Bump zopfli from 0.2.3 to 0.2.3.post1

Bumps [zopfli](https://github.com/fonttools/py-zopfli) from 0.2.3 to 0.2.3.post1.
- [Release notes](https://github.com/fonttools/py-zopfli/releases)
- [Commits](fonttools/py-zopfli@v0.2.3...v0.2.3.post1)

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

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

requirements_static.txt

@@ -10,5 +10,5 @@ tinycss2==1.4.0
     # via -r requirements_static.in
 webencodings==0.5.1
     # via tinycss2
-zopfli==0.2.3
+zopfli==0.2.3.post1
     # via -r requirements_static.in