Fix bugs

[uniqueg]

Description

• Set warning run states only if current run state is RunStates.OKAY
• Consistently indicate range of supported Python versions (3.7 through 3.9) in setup.py, environment.yml and CI workflow
• Limit range of supported Pydantic versions (>=1.8.1, <2)

Fixes #138
Fixes #139 Fixes #140

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)

Checklist

Please carefully read these items and tick them off if the statements are true or do not apply.

• [x] I have performed a self-review of my own code
• [x] My code follows the existing coding style, lints and generates no new warnings
• [x] I have added type annotations to all function/method signatures, and I have added type annotations for any local variables that are non-trivial, potentially ambiguous or might otherwise benefit from explicit typing.
• [x] I have commented my code in hard-to-understand areas
• [x] I have added ["Google-style docstrings"] to all new modules, classes, methods/functions or updated previously existing ones
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes and I have not reduced the code coverage relative to the previous state
• [x] I have updated any sections of the app's documentation that are affected by the proposed changes

If for some reason you are unable to tick off all boxes, please leave a comment explaining the issue you are facing so that we can work on it together.

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (7d81199) 99.80% compared to head (457ab51) 99.80%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #141 +/- ## ======================================= Coverage 99.80% 99.80% ======================================= Files 12 12 Lines 1039 1042 +3 ======================================= + Hits 1037 1040 +3 Misses 2 2 ``` | [Files Changed](https://app.codecov.io/gh/zavolanlab/htsinfer/pull/141?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=zavolanlab) | Coverage Δ | | |---|---|---| | [htsinfer/htsinfer.py](https://app.codecov.io/gh/zavolanlab/htsinfer/pull/141?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=zavolanlab#diff-aHRzaW5mZXIvaHRzaW5mZXIucHk=) | `100.00% <100.00%> (ø)` | |

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