Prepeare for next release

[nalajcie]

• cherry-pick changes from master

  • phoenix-rtos-build 2aa1919...27278d1 (2):

  toolchain: skip checking if build env is sane
  makes: make build env sanity checks optional

  • phoenix-rtos-tests e6efa70...2b4af5d (2):

  trunner: requirements: install RPi.GPIO only on ARM targets
  trunner: change style of printing flash output

• ci: run full campaign for every commit on release branch
  JIRA: CI-453

• update submodules to v3.2.0
  WARN: Missing from the phoenix-rtos-project v3.2.0 release tag!

Description

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (refactoring, style fixes, git/CI config, submodule management, no code logic changes)

How Has This Been Tested?

• Already covered by automatic testing.
• New test added: (add PR link here).
• Tested by hand on: (list targets here).

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing linter checks and tests passed.
• My changes generate no new compilation warnings for any of the targets.

Special treatment

• This PR needs additional PRs to work (list the PRs, preferably in merge-order).
• I will merge this PR by myself when appropriate.