Silence mypy when all is good. Make prospector a bit louder.

tox.ini

@@ -22,13 +22,13 @@ commands = python -m unittest discover -v -s ./sedr -p "test_*.py"
 
 [testenv:prospector]
 description = Run static analysis using prospector, but dont fail on errors
+ignore_outcome = true
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/requirements-dev.txt
 commands = prospector --no-autodetect \
                --test-warnings \
                --die-on-tool-error \
-               --zero-exit \
                {toxinidir}/sedr/
 
 [testenv:format]
@@ -40,12 +40,11 @@ deps =
 commands = ruff format {toxinidir}/sedr
 
 [testenv:mypy]
-ignore_outcome = true
 description = Check typing TODO
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/requirements-dev.txt
-commands = mypy --follow-imports skip {toxinidir}/sedr
+commands = mypy --ignore-missing-imports {toxinidir}/sedr
 
 [testenv:bandit]
 description = Check for security issues