Fix CI jobs

[speth]

Changes proposed in this pull request

Working on fixing the following:

• Fix error processing code coverage results, which fails with messages like:

  
  (ERROR) Error occurred while reading reports:
  Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/__main__.py", line 362, in main
  covdata: CovData = gcovr_formats.read_reports(options)
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/__init__.py", line 66, in read_reports
  covdata = GcovHandler(options).read_report()
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/__init__.py", line 202, in read_report
  return read_report(self.options)
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/read.py", line 86, in read_report
  contexts = pool.wait()
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/workers.py", line 173, in __exit__
  self.wait()
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/workers.py", line 164, in wait
  raise self.exceptions[0][1]
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/read.py", line 86, in read_report
  contexts = pool.wait()
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/workers.py", line 164, in wait
  raise self.exceptions[0][1]
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/workers.py", line 80, in worker
  work(*args, **kwargs)
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/read.py", line 422, in process_datafile
  done = run_gcov_and_process_files(
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/read.py", line 709, in run_gcov_and_process_files
  process_gcov_data(fname, abs_filename, covdata, options)
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/read.py", line 217, in process_gcov_data
  coverage, source_lines = parse_coverage(
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/parser.py", line 379, in parse_coverage
  _report_lines_with_errors(
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/parser.py", line 561, in _report_lines_with_errors
  raise errors[0]  # guaranteed to have at least one exception
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/parser.py", line 335, in parse_coverage
  _parse_line(raw_line, ignore_parse_errors, persistent_states),
  File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/gcovr/formats/gcov/parser.py", line 770, in _parse_line
  raise UnknownLineType(line)
  gcovr.formats.gcov.parser.UnknownLineType:     %%%%%:10000-block  0

- Fix "Windows 2019" runners which fail during `pip install ...` with the error `ERROR: Invalid requirement: '"scons<4.4.0"'`.

**If applicable, fill in the issue number this pull request is fixing**

<!-- Issues with issue number '<issue>' are referenced as #<issue>. To link to an issue in the enhancements repository, use Cantera/enhancements#<issue>. -->

Closes #

**If applicable, provide an example illustrating new features this pull request is introducing**

<!-- A minimal, complete, and reproducible example demonstrating features introduced by this pull request. See https://stackoverflow.com/help/minimal-reproducible-example for additional suggestions on how to create such an example. -->

**Checklist**

- [x] The pull request includes a clear description of this code change
- [x] Commit messages have short titles and reference relevant issues
- [x] Build passes (`scons build` & `scons test`) and unit tests address code coverage
- [x] Style & formatting of contributed code follows [contributing guidelines](https://github.com/Cantera/cantera/blob/main/CONTRIBUTING.md)
- [x] The pull request is ready for review

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 72.77%. Comparing base (71e4ccb) to head (72e90c2). Report is 16 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1671 +/- ## ========================================== - Coverage 72.78% 72.77% -0.01% ========================================== Files 375 375 Lines 56610 56632 +22 Branches 20510 20590 +80 ========================================== + Hits 41201 41212 +11 - Misses 12389 12398 +9 - Partials 3020 3022 +2 ```

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