chore(release): internal release notes 2.6.0-alpha.0

[y3rsh]

Overview

In preparation for an internal build from edge

Will build when these are merged

• Chore: mergeback 8.5.0 alpha.1 #18483
• chore: use hatch as a build backend for python projects #18377
• buildroot pr: opentrons: switch to hatch builds of opentrons packages buildroot#246
• oe pr: opentrons: switch to hatch oe-core#196

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 25.47%. Comparing base (de110a3) to head (51a223d).

Additional details and impacted files

@@            Coverage Diff             @@
##             edge   #18484      +/-   ##
==========================================
+ Coverage   24.42%   25.47%   +1.05%     
==========================================
  Files        3269     3269              
  Lines      280710   278858    -1852     
  Branches    27099    32048    +4949     
==========================================
+ Hits        68561    71038    +2477     
+ Misses     212122   207797    -4325     
+ Partials       27       23       -4     

Flag	Coverage Δ
protocol-designer	19.53% <ø> (ø)
step-generation	4.40% <ø> (ø)

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see 280 files with indirect coverage changes

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