update readme community call dates and badge

[j1m-ryan]

Proposed changes

• Updating the dates as we are near the end
• Updating the badge as running a manual ci workflow makes it look like its failing when its not, so this only looks at scheduled workflows now

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.24%. Comparing base (cc7e466) to head (c0061fc).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6404      +/-   ##
==========================================
+ Coverage   53.20%   53.24%   +0.03%     
==========================================
  Files          83       84       +1     
  Lines       16002    16002              
==========================================
+ Hits         8514     8520       +6     
+ Misses       7081     7077       -4     
+ Partials      407      405       -2     

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