Test dplyr fixes

[ntorresd]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.95041% with 17 lines in your changes missing coverage. Please review.

Project coverage is 89.82%. Comparing base (284669e) to head (a0b04f8).

Files with missing lines	Patch %	Lines
R/plot_seromodel.R	83.63%	9 Missing ⚠️
R/summarise_seromodel.R	41.66%	7 Missing ⚠️
R/simulate_serosurvey.R	97.87%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #247      +/-   ##
==========================================
- Coverage   90.21%   89.82%   -0.39%     
==========================================
  Files           6        6              
  Lines         991     1012      +21     
==========================================
+ Hits          894      909      +15     
- Misses         97      103       +6     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests