[chore] Prepare release v1.2.0/v0.95.0

[opentelemetrybot]

The following commands were run to prepare this release:

• make chlog-update VERSION=v1.2.0/v0.95.0
• make prepare-release PREVIOUS_VERSION=1.1.0 RELEASE_CANDIDATE=1.2.0 MODSET=stable
• make prepare-release PREVIOUS_VERSION=0.94.1 RELEASE_CANDIDATE=0.95.0 MODSET=beta

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (0ab8f44) 90.62% compared to head (4996361) 90.62%.

Files	Patch %	Lines
cmd/otelcorecol/main.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9600   +/-   ##
=======================================
  Coverage   90.62%   90.62%           
=======================================
  Files         347      347           
  Lines       18232    18232           
=======================================
  Hits        16522    16522           
  Misses       1381     1381           
  Partials      329      329           

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[dmitryax]

We need to wait until open-telemetry/opentelemetry-collector-contrib#31318 passes

[jpkrohling]

open-telemetry/opentelemetry-collector-contrib#31318 is green!