[chore] prepare release v1.0.0-RC3/v0.69.0

[djaglowski]

• make chlog-update and update of core builder test
• Amend changelog name
• prepare stable release v1.0.0-RC3
• prepare beta release v0.69.0
• multimod changes

Resolves #6911
Resolves #6919

[codecov]

Codecov Report

Base: 91.05% // Head: 91.05% // No change to project coverage 👍

Coverage data is based on head (0d189df) compared to base (0ad0436).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6910   +/-   ##
=======================================
  Coverage   91.05%   91.05%           
=======================================
  Files         237      237           
  Lines       14298    14298           
=======================================
  Hits        13019    13019           
  Misses       1027     1027           
  Partials      252      252           

Impacted Files	Coverage Δ
cmd/builder/internal/builder/config.go	68.49% <ø> (ø)
cmd/otelcorecol/main.go	0.00% <0.00%> (ø)

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