adjust dependencies given that Python 3.9 is the minimum version

Author: mr-c

docs/requirements.txt

@@ -3,4 +3,3 @@ sphinx-rtd-theme==3.0.2
 sphinx-autoapi
 sphinx-autodoc-typehints
 sphinxcontrib-autoprogram
-importlib_resources;python_version<'3.9'

pyproject.toml

@@ -5,7 +5,6 @@ requires = [
     "mypy==1.16.1",  # also update mypy-requirements.txt
     "types-requests",
     "types-psutil",
-    "importlib_resources>=1.4;python_version<'3.9'",
     "ruamel.yaml>=0.16.0,<0.19",
     "schema-salad>=8.9,<9",
     "cwl-utils>=0.32",

requirements.txt

@@ -5,7 +5,6 @@ schema-salad>=8.9,<9
 prov==1.5.1
 mypy-extensions
 psutil>=5.6.6
-importlib_resources>=1.4;python_version<'3.9'
 coloredlogs
 pydot>=1.4.1
 argcomplete>=1.12.0

test-requirements.txt

@@ -3,7 +3,7 @@ pytest>= 6.2,< 8.5
 pytest-xdist>=3.2.0 # for the worksteal scheduler
 psutil # enhances pytest-xdist to allow "-n logical"
 pytest-httpserver
-pytest-retry;python_version>='3.9'
+pytest-retry
 mock>=2.0.0
 pytest-mock>=1.10.0
 pytest-cov