Fix issue of 2005 population numbers not showing in cprg_county_proportions.RDS

Electing to not go through the whole process since the only change is modified RDS and gitignore

Checklist

Please complete this checklist as a courtesy to the PR reviewer.

Code and styling

[ ] All of the files/scripts I added are in the right place and named appropriately. See the README for details.
[ ] I have not used setwd()
[ ] I have used file.path(here::here(), "file_name")) to source any scripts or read in data
[ ] I have not added any large datasets, unless absolutely necessary (explain)
[ ] I have commented my code, particularly in hard to understand areas
[ ] I have added additional package dependencies as necessary with renv::install()
[ ] I have run styler::style_dir(".", recursive = TRUE, filetype = c("R", "qmd"))
[ ] Plots
- [ ] If plotly, use source = "chunk-name" in plot_ly()
- [ ] Use formatting with councilR::plotly_layout()?
[ ] Chunk formatting
- [ ] All chunks named
- [ ] All figure or table chunks have caption
- [ ] out.width: "95%". If a specific height is needed, use pixels. and/or out.height: "500px"

Document editing

[ ] I have ensured that modified documents knit successfully from render_for_publication.R
[ ] I have fixed any missing citations, cross references, hyperlinks
[ ] I have reviewed my contributions for typos and misspellings.

GitHub and project management

[ ] I have identified and assigned at least one Reviewer (Liz, Sam, Laine) to this PR
[ ] I have assigned myself to this PR
[ ] I have updated the status in the GitHub Project