Update CFE, PET, and Topmodel again for -Werror fixes

[PhilMiller]

More module revisions in support of #781

Changes

• Update CFE, PET, and Topmodel to correct more compiler warnings

Testing

1. CI

Checklist

• [x] PR has an informative and human-readable title
• [x] Changes are limited to a single goal (no scope creep)
• [x] Code can be automatically merged (no conflicts)
• [x] Code follows project standards (link if applicable)
• [x] Passes all existing automated tests
• [x] Any change in functionality is tested
• [x] New functions are documented (with a description, list of inputs, and expected output)
• [x] Placeholder code is flagged / future todos are captured in comments
• [x] Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• [x] Reviewers requested with the Reviewers tool :arrow_right:

Target Environment support

• [x] Linux
• [x] macOS

[PhilMiller]

Looks like a small update to CFE is also needed:

[  5%] Building C object /home/runner/work/ngen/ngen/extern/cfe/cmake_build/CMakeFiles/cfebmi.dir/cfe/src/bmi_cfe.c.o
/home/runner/work/ngen/ngen/extern/cfe/cfe/src/bmi_cfe.c: In function ‘read_init_config_cfe’:
/home/runner/work/ngen/ngen/extern/cfe/cfe/src/bmi_cfe.c:513:9: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result]
  513 |         fgets(config_line, max_config_line_length + 1, fp);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/runner/work/ngen/ngen/extern/cfe/cfe/src/bmi_cfe.c: In function ‘Initialize’:
/home/runner/work/ngen/ngen/extern/cfe/cfe/src/bmi_cfe.c:1252:9: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result]
 1252 |         fgets(line_str, max_forcing_line_length + 1, ffp);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/runner/work/ngen/ngen/extern/cfe/cfe/src/bmi_cfe.c:1257:13: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result]
 1257 |             fgets(line_str, max_forcing_line_length + 1, ffp);  // read in a line of AORC data.
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~