GitHub PR actions: update timing comments

[tautschnig]

This change fixes the missing information for
check-ubuntu-22_04-make-clang, and replaces all annotations by intervals: when re-use is possible, compiler caches significantly affect (improve) build performance, resulting in variable job runtimes.

• Each commit message has a non-empty body, explaining why the change was made.
• n/a Methods or procedures I have added are documented, following the guidelines provided in CODING_STANDARD.md.
• n/a The feature or user visible behaviour I have added or modified has been documented in the User Guide in doc/cprover-manual/
• Regression or unit tests are included, or existing tests cover the modified code (in this case I have detailed which ones those are in the commit message).
• n/a My commit message includes data points confirming performance improvements (if claimed).
• My PR is restricted to a single feature or bugfix.
• n/a White-space or formatting changes outside the feature-related changed lines are in commits of their own.

[codecov]

Codecov Report

Base: 78.48% // Head: 78.48% // No change to project coverage 👍

Coverage data is based on head (a83ea22) compared to base (cb951fb).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #7504   +/-   ##
========================================
  Coverage    78.48%   78.48%           
========================================
  Files         1663     1663           
  Lines       191249   191249           
========================================
  Hits        150103   150103           
  Misses       41146    41146           

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