The CI is now able to produce valid macOS Ventura bundles

[umbynos]

Please check if the PR fulfills these requirements

• The PR has no duplicates (please search among the Pull Requests
  before creating one)
  - [ ] Tests for the changes have been added (for bug fixes / features)

• What kind of change does this PR introduce?

CI fix

• What is the current behavior?

The bundles generated by the CI are not valid on macOS Ventura

• What is the new behavior?

The bundles are valid:

• the notarization happens only for the binary and not for the bundle
• bumped the runners
• fixed the usage of set-output commands
• general enhancements

---

• Does this PR introduce a breaking change?

nope

• Other information:

[umbynos]

This can be tested here https://github.com/arduino/arduino-create-agent/releases/tag/1.2.7-ventura

[codecov-commenter]

Codecov Report

Base: 8.45% // Head: 8.45% // No change to project coverage 👍

Coverage data is based on head (7eedf9c) compared to base (b52a17a).
Patch has no changes to coverable lines.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #740   +/-   ##
=====================================
  Coverage   8.45%   8.45%           
=====================================
  Files         64      64           
  Lines       5052    5052           
=====================================
  Hits         427     427           
  Misses      4571    4571           
  Partials      54      54           

Flag	Coverage Δ
unit	8.45% <ø> (ø)

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