build(deps-dev): update jsonschema requirement

Updates the requirements on [jsonschema](https://github.com/python-jsonschema/jsonschema) to permit the latest version.
- [Release notes](https://github.com/python-jsonschema/jsonschema/releases)
- [Changelog](https://github.com/python-jsonschema/jsonschema/blob/main/CHANGELOG.rst)
- [Commits](python-jsonschema/jsonschema@v4.0.1...v4.18.4)

---
updated-dependencies:
- dependency-name: jsonschema
  dependency-type: direct:production
...

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

pyproject.toml

@@ -56,7 +56,7 @@ test = [
     "doc8~=1.1",
     "html5lib~=1.1",
     "jinja2<4.0",
-    "jsonschema>=4.0.1,<4.18",
+    "jsonschema>=4.0.1,<4.19",
     "mypy~=1.2",
     "orjson~=3.8",
     "pre-commit~=3.2",
@@ -75,7 +75,7 @@ test = [
 ]
 urllib3 = ["urllib3>=1.26"]
 # jsonschema v4.18.2 breaks validation, and it feels safer to set a ceiling rather than just skip this version. The ceiling should be removed when the v4.18 lineage has settled down and feels safer.
-validation = ["jsonschema>=4.0.1,<4.18"]
+validation = ["jsonschema>=4.0.1,<4.19"]
 
 [project.urls]
 homepage = "https://github.com/stac-utils/pystac"