fix(tests): include tests in sdist builds

pyproject.toml

@@ -12,32 +12,33 @@ readme = "README.md"
 homepage = "https://github.com/CycloneDX/cyclonedx-python-lib"
 repository = "https://github.com/CycloneDX/cyclonedx-python-lib"
 packages = [
-    { include = "cyclonedx" }
+  { include = "cyclonedx" }
 ]
 include = [
-    "LICENSE",
+  { path = "tests", format = "sdist" },
+  "LICENSE",
 ]
 classifiers = [
-    # Trove classifiers - https://packaging.python.org/specifications/core-metadata/#metadata-classifier
-    # Full list: https://pypi.python.org/pypi?%3Aaction=list_classifiers
-    'Development Status :: 5 - Production/Stable',
-    'Intended Audience :: Developers',
-    'Intended Audience :: Information Technology',
-    'Intended Audience :: Legal Industry',
-    'Intended Audience :: System Administrators',
-    'Topic :: Security',
-    'Topic :: Software Development',
-    'Topic :: System :: Software Distribution',
-    'License :: OSI Approved :: Apache Software License',
-    'Programming Language :: Python :: 3.6',
-    'Programming Language :: Python :: 3.7',
-    'Programming Language :: Python :: 3.8',
-    'Programming Language :: Python :: 3.9',
-    'Programming Language :: Python :: 3.10',
-    'Typing :: Typed'
+  # Trove classifiers - https://packaging.python.org/specifications/core-metadata/#metadata-classifier
+  # Full list: https://pypi.python.org/pypi?%3Aaction=list_classifiers
+  'Development Status :: 5 - Production/Stable',
+  'Intended Audience :: Developers',
+  'Intended Audience :: Information Technology',
+  'Intended Audience :: Legal Industry',
+  'Intended Audience :: System Administrators',
+  'Topic :: Security',
+  'Topic :: Software Development',
+  'Topic :: System :: Software Distribution',
+  'License :: OSI Approved :: Apache Software License',
+  'Programming Language :: Python :: 3.6',
+  'Programming Language :: Python :: 3.7',
+  'Programming Language :: Python :: 3.8',
+  'Programming Language :: Python :: 3.9',
+  'Programming Language :: Python :: 3.10',
+  'Typing :: Typed',
 ]
 keywords = [
-    "BOM", "SBOM", "SCA", "OWASP"
+  "BOM", "SBOM", "SCA", "OWASP",
 ]
 
 [tool.poetry.urls]
@@ -77,7 +78,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.semantic_release]
 version_variable = [
-    "pyproject.toml:version"
+  "pyproject.toml:version"
 ]
 branch = "main"
 upload_to_pypi = true