[CI] test more ocaml-compiler versions

[a2line]

Here is a summary of various GeneWeb vs Github CI on May, 10th 2024. Note that Geneweb itself asks for an Ocaml-compiler above version 4.08. Using “latests OS”, macOS-14 fails the most, Windows is still failing with Ocaml > 5.0.

| ocaml+opt. | linux | macos | mac14 |  win  | linux = linux-latest (Ubuntu LTS 22.04)
|------------|-------|-------|-------|-------| macos = macos-11/12/13 (Big Sur/Monterey/Ventura)
| 4.08.x     |   ✅  |   ✅  |   ❌¹ |   ✅  |  mac14 = macos-latest (Sonoma)
| 4.09.x     |   ✅  |   ✅  |   ❌¹ |   ✅  |  win = windows-latest (Windows Server 2022)⁴
| 4.10.x     |   ✅  |   ✅  |   ❌² |   ✅  |
| 4.11.x     |   ✅  |   ✅  |   ❌¹ |   ✅  |
| 4.12.x     |   ✅  |   ✅  |   ❌² |   ✅  |
| 4.13.x     |   ✅  |   ✅  |   ❌² |   ✅  |
| 4.14.x     |   ✅  |   ✅  |   ✅️  |   ✅  |
| 4.14.2+nnp |   ✅³ |   ✅³ |   ✅️³ |   ❌¹ |
| 5.0.x      |   ✅  |   ✅  |   ✅️  |   ❌¹ |
| 5.1.x      |   ✅  |   ✅  |   ✅️  |   ❌¹ |
| 5.2.0~b3   |   ❌¹ |   ❌¹ |   ❌¹ |   ❌¹ |

¹ Compiler not available for that OS.
² Build of unnf dep. is failing, see this 4.13.1 macOS build job for example.
³ Compiler variants with option no-naked-pointer installed (check that -memory-in-cache gwd parameter is working!).
⁴ Github hosted runners.

[hgouraud]

beau travail