Prepare release for auto-sizes plugin

[mukeshpanchal27]

Summary

• Bump plugin versions
• Update readme changelogs

Plugins included in this release:

• auto-sizes 1.6.0

Relevant technical choices

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 67.22%. Comparing base (42bb977) to head (f356d46).
⚠️ Report is 5 commits behind head on trunk.

Files with missing lines	Patch %	Lines
plugins/auto-sizes/auto-sizes.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            trunk    #2106   +/-   ##
=======================================
  Coverage   67.22%   67.22%           
=======================================
  Files          93       93           
  Lines        7758     7758           
=======================================
  Hits         5215     5215           
  Misses       2543     2543           

Flag	Coverage Δ
multisite	67.22% <0.00%> (ø)
single	36.71% <0.00%> (ø)

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[github-actions]

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Co-authored-by: mukeshpanchal27 <[email protected]>
Co-authored-by: swissspidy <[email protected]>
Co-authored-by: felixarntz <[email protected]>
Co-authored-by: westonruter <[email protected]>
Co-authored-by: joemcgill <[email protected]>

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[joemcgill]

I got a chance to preview the updates planned for 1.6.0 today and am seeing a great improvement in the way sizes are being calculated for featured image blocks. Also excited to see the experimental label being removed during this release. Great work!