[Backport V5.4] DOCSP-50017 Remove EOL mentions

[lindseymoore]

• DOCSP-50017 Remove EOL versions

• auth

• auth suggestion NR

• NR comments

• get rid of font on headings

(cherry picked from commit 94fd075)

(cherry picked from commit 7046a65)

Pull Request Info

PR Reviewing Guidelines

JIRA - https://jira.mongodb.org/browse/DOCSP-50017

Staging Links

fundamentals/auth

fundamentals/builders/aggregates

fundamentals/builders/projections

fundamentals/connection/network-compression

fundamentals/crud/read-operations/sort

fundamentals/enterprise-auth

fundamentals/indexes

fundamentals/stable-api

fundamentals/time-series

Self-Review Checklist

• Is this free of any warnings or errors in the RST?
• Did you run a spell-check?
• Did you run a grammar-check?
• Are all the links working?
• Are the facets and meta keywords accurate?
• Are the page titles greater than 20 characters long and SEO relevant?

[github-actions]

The backport to v5.3 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-v5.3 v5.3
# Navigate to the new working tree
cd .worktrees/backport-v5.3
# Create a new branch
git switch --create backport-222-to-v5.3
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 7998a5b5b128e00a8021c121f11a4e709e5ba7fd
# Push it to GitHub
git push --set-upstream origin backport-222-to-v5.3
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-v5.3

Then, create a pull request where the base branch is v5.3 and the compare/head branch is backport-222-to-v5.3.