Switch everything to gnu14 and update Open MPI to 5.0.5

[adrianreber]

This includes the Open MPI 5.0.5 update to see if everything was correctly update to gnu14.

[github-actions]

Test Results

14 files  ±0  14 suites  ±0   6s ⏱️ ±0s
41 tests ±0  41 ✅ ±0  0 💤 ±0  0 ❌ ±0 
54 runs  ±0  54 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit ddc675a. ± Comparison against base commit 696bb14.

This pull request removes 14 and adds 14 tests. Note that renamed tests count towards both.

debugger ‑ [Compilers] debugger availability (gnu13)
debugger ‑ [Compilers] debugger man page (gnu13)
man_pages ‑ [Compilers] C compiler man/help page (gnu13)
man_pages ‑ [Compilers] C++ compiler man/help page (gnu13)
man_pages ‑ [Compilers] Fortran compiler man/help page (gnu13)
rm_execution ‑ [Compilers] C binary runs under resource manager (slurm/gnu13)
rm_execution ‑ [Compilers] C openmp binary runs under resource manager (slurm/gnu13)
rm_execution ‑ [Compilers] C++ binary runs under resource manager (slurm/gnu13)
rm_execution ‑ [Compilers] C++ openmp binary runs under resource manager (slurm/gnu13)
rm_execution ‑ [Compilers] Fortran binary runs under resource manager (slurm/gnu13)
…

debugger ‑ [Compilers] debugger availability (gnu14)
debugger ‑ [Compilers] debugger man page (gnu14)
man_pages ‑ [Compilers] C compiler man/help page (gnu14)
man_pages ‑ [Compilers] C++ compiler man/help page (gnu14)
man_pages ‑ [Compilers] Fortran compiler man/help page (gnu14)
rm_execution ‑ [Compilers] C binary runs under resource manager (slurm/gnu14)
rm_execution ‑ [Compilers] C openmp binary runs under resource manager (slurm/gnu14)
rm_execution ‑ [Compilers] C++ binary runs under resource manager (slurm/gnu14)
rm_execution ‑ [Compilers] C++ openmp binary runs under resource manager (slurm/gnu14)
rm_execution ‑ [Compilers] Fortran binary runs under resource manager (slurm/gnu14)
…

♻️ This comment has been updated with latest results.