Update compiler and tools

[flo12356]

gcc 13 -> 14
gcc-arm 13.3 -> 14.3
clang 19 -> 20
clang-tools 19 -> 20

See STS1_COBC_Docker

Fixes #497

[flo12356]

GCC_14.xlsx

I run several tests to ensure that the cobc still works as intended.
For the failing unit test RfTest a issue was opened (also occures with gcc-arm 13.3)
See #496

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.38%. Comparing base (a3235ce) to head (08d3caf).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #498   +/-   ##
=======================================
  Coverage   90.38%   90.38%           
=======================================
  Files         121      121           
  Lines        6493     6493           
  Branches      324      324           
=======================================
  Hits         5869     5869           
  Misses        624      624           

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[flo12356]

The newer toolchain causes a firmware reduction from 125344 B to 123788 B in MinSizeRel cobc-for-bootloader config!