[qa] Changes to docformatter; Update minimum Python version to 3.9

src/ptbench/scripts/relevance_analysis.py

src/ptbench/utils/resources.py

tests/data/iris.json

tests/test_11k.py

tests/test_11k_RS.py

tests/test_11k_v2.py

tests/test_11k_v2_RS.py

tests/test_ch_RS.py

tests/test_cli.py

tests/test_database_split.py

tests/test_hivtb.py

tests/test_hivtb_RS.py

tests/test_image_utils.py

tests/test_in_RS.py

tests/test_indian.py

tests/test_mc_RS.py

tests/test_mc_ch.py

tests/test_mc_ch_RS.py

tests/test_mc_ch_in.py

tests/test_mc_ch_in_11k.py