feat!: drop support for python <3.9 #1675

Job	Run time
Linting & Coding Standards	42s
StaticCodingAnalysis (py3.13 -current)	46s
install & run "cyclonedx-py --help" (ubuntu-latest)	9s
StaticCodingAnalysis (py3.9 -lowest)	41s
install & run "cyclonedx-py --help" (macos-latest)	25s
install & run "cyclonedx-py --help" (windows-latest)	54s
install & run "python -m cyclonedx_py --help" (ubuntu-latest)	14s
Test (ubuntu-latest py3.13)	2m 46s
find Security Issues	35s
install & run "python -m cyclonedx_py --help" (macos-latest)	29s
Test (ubuntu-latest py3.12)	2m 43s
install & run "python -m cyclonedx_py --help" (windows-latest)	35s
Test (ubuntu-latest py3.11)	2m 23s
Test (ubuntu-latest py3.10)	2m 39s
Test (ubuntu-latest py3.9)	2m 32s
Test (macos-13 py3.13)	5m 31s
Test (macos-13 py3.12)	4m 0s
Test (macos-13 py3.11)	3m 30s
Test (macos-13 py3.10)	3m 22s
Test (macos-13 py3.9)	3m 27s
Test (windows-latest py3.13)	5m 7s
Test (windows-latest py3.12)	4m 29s
Test (windows-latest py3.11)	4m 27s
Test (windows-latest py3.10)	4m 11s
Test (windows-latest py3.9)	5m 21s
Publish test coverage	9s
	1h 2m 7s

Provide feedback