Update GHA runner and Python versions

[lbianchi-lbl]

Summary/Motivation

• Match Python versions currently supported by IDAES (3.9 through 3.12)
• Update GHA runner versions to more recent ones (e.g. ubuntu-2004 -> ubuntu-2204)
• Add macos jobs using macos-14 runners with Apple Silicon
• Remove "experimental" macOS job using non-IDAES solvers

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[lbianchi-lbl]

• As @bknueven points out, Python 3.12 has a non-backward-compatible change in the built-in Python sum() function that might be causing the Python 3.12 jobs to fail consistently across platforms
• macOS (with the new Apple Silicon runners) seems to be failing consistently across all Python versions. Most if not all failures come from the BSM2 model

[ksbeattie]

Waiting for #1469

[bknueven]

Let's fix the easy things to fix and mark the remainder as xfail and return to them after the next release.

[bknueven]

@lbianchi-lbl I believe I got all the "false positives" in the PR which are easy to fix. I would suggest we mark the remaining as x-fail strict. The remaining models which do not pass are under active development / tweaking, so we should know if they start passing due to some change.