Handle json.load() exceptions

[mirpedrol]

Close #2126

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[github-actions]

This PR is against the master branch ❌

• Do not close this PR
• Click Edit and change the base to dev
• This CI test will remain failed until you push a new commit

---

Hi @mirpedrol,

It looks like this pull-request is has been made against the mirpedrol/tools master branch.
The master branch on nf-core repositories should always contain code from the latest release.
Because of this, PRs to master are only allowed if they come from the mirpedrol/tools dev branch.

You do not need to close this PR, you can change the target branch to dev by clicking the "Edit" button at the top of this page.
Note that even after this, the test will continue to show as failing until you push a new commit.

Thanks again for your contribution!

[codecov]

Codecov Report

Merging #2134 (632b675) into dev (ee6725a) will decrease coverage by 0.04%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##              dev    #2134      +/-   ##
==========================================
- Coverage   71.47%   71.43%   -0.05%     
==========================================
  Files          77       77              
  Lines        8358     8367       +9     
==========================================
+ Hits         5974     5977       +3     
- Misses       2384     2390       +6     

Impacted Files	Coverage Δ
nf_core/lint/nextflow_config.py	77.45% <ø> (ø)
nf_core/modules/modules_json.py	80.26% <50.00%> (-0.28%)	⬇️
nf_core/utils.py	82.38% <50.00%> (-0.28%)	⬇️
nf_core/schema.py	76.12% <100.00%> (+0.14%)	⬆️
nf_core/modules/lint/module_version.py	78.26% <0.00%> (-4.35%)	⬇️
nf_core/modules/lint/__init__.py	82.72% <0.00%> (-0.53%)	⬇️

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