Bump setuptools from 71.0.0 to 78.1.1 (#409)

Bumps [setuptools](https://github.com/pypa/setuptools) from 71.0.0 to 78.1.1.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/NEWS.rst)
- [Commits](pypa/setuptools@v71.0.0...v78.1.1)

---
updated-dependencies:
- dependency-name: setuptools
  dependency-version: 78.1.1
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -9,7 +9,7 @@ classifiers = []
 urls = { "Documentation" = "https://ion-python.readthedocs.io/en/latest/?badge=latest" }
 dependencies = [
     "attrs==21.2.0",
-    "setuptools==71.0.0",    # Needed for jsonconversion, it seems
+    "setuptools==78.1.1",    # Needed for jsonconversion, it seems
     "jsonconversion==0.2.13", # 1.0.1 tightens the requirements for pytest, and 1.0.0 is broken.
     "pyparsing==3.2.3",
 ]