Bump setuptools from 75.2.0 to 78.1.1 and lock marshmallow-dataclass[union] to 8.6.1 (#4730)

* Bump setuptools from 75.2.0 to 78.1.1

Bumps [setuptools](https://github.com/pypa/setuptools) from 75.2.0 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@v75.2.0...v78.1.1)

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

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

* Bump Package Version

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Eric Forte <[email protected]>
Co-authored-by: shashank-elastic <[email protected]>
Co-authored-by: eric-forte-elastic <[email protected]>

(cherry picked from commit 932163e)

Author: dependabot[bot]

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "detection_rules"
-version = "1.3.5"
+version = "1.3.6"
 description = "Detection Rules is the home for rules used by Elastic Security. This repository is used for the development, maintenance, testing, validation, and release of rules for Elastic Security’s Detection Engine."
 readme = "README.md"
 requires-python = ">=3.12"
@@ -25,7 +25,7 @@ dependencies = [
   "jsl==0.2.4",
   "jsonschema>=4.21.1",
   "marko==2.0.3",
-  "marshmallow-dataclass[union]>=8.7",
+  "marshmallow-dataclass[union]==8.6.1",
   "marshmallow-jsonschema~=0.13.0",
   "marshmallow-union~=0.1.15",
   "marshmallow~=3.26.1",
@@ -42,7 +42,7 @@ dependencies = [
   "PyGithub==2.2.0",
   "detection-rules-kql @ git+https://github.com/elastic/detection-rules.git#subdirectory=lib/kql",
   "detection-rules-kibana @ git+https://github.com/elastic/detection-rules.git#subdirectory=lib/kibana",
-  "setuptools==75.2.0"
+  "setuptools==78.1.1"
 ]
 [project.optional-dependencies]
 dev = [