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Migrate remaining CI jobs off custom json-ci image to official images (#5263)

* Migrate ci_icpc/ci_test_compilers_gcc_old/ci_infer off custom json-ci image

Replaces the last three consumers of ghcr.io/nlohmann/json-ci with official
images: ci_icpc now uses Intel's own intel/oneapi-hpckit:2023.2.1-devel-ubuntu22.04
(the last release with classic icc/icpc before Intel dropped it in oneAPI
2024.0), ci_test_compilers_gcc_old installs old GCCs on official ubuntu:20.04
via the same PPA/archive setup the custom image used (working around
actions/checkout's incompatibility with official gcc:4/5/6 images), and
ci_infer runs directly on ubuntu-latest, fetching Facebook's official Infer
release tarball inline instead of a maintained image. No job in
ubuntu.yml references the custom image anymore.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Update quality-assurance compiler table for CI image migration

Reflects the ci_icpc/ci_test_compilers_gcc_old container migration: the
old-GCC jobs (4.8/4.9/5/6) now compile inside official ubuntu:20.04 rather
than the custom Focal-based json-ci image (same OS, just now attributed to
the official image), and ci_icpc now uses Intel's official
intel/oneapi-hpckit:2023.2.1-devel-ubuntu22.04, bumping the reported ICC
version from 2021.5.0 to 2021.10.0 and the OS from Ubuntu 20.04.3 to 22.04.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* Fix CI failures from the json-ci image migration

- ci_icpc: the official intel/oneapi-hpckit image has no CMake preinstalled
  (the custom image bundled one); add the missing lukka/get-cmake step.
- ci_test_compilers_gcc_old: official ubuntu:20.04 has no build tool, so
  CMake's default Unix Makefiles generator failed with "CMAKE_MAKE_PROGRAM
  is not set"; install make alongside the PPA-provided g++.
- ci_infer: Infer v1.1.0's bundled Clang frontend can't parse GCC 14's
  headers (ubuntu-latest's default toolchain), failing with parse errors in
  <bits/unicode.h>; bump to the lat... (continued)

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