Bump rustc to 1.65

[PicoCentauri]

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📚 Documentation preview 📚: https://rascaline--245.org.readthedocs.build/en/245/

[github-actions]

Here is a pre-built version of the code in this pull request: wheels.zip, you can install it locally by unzipping wheels.zip and using pip to install the file matching your system

[Luthaf]

This is a bit weird. CI in #235 is failing due to regex, but we should not have regex anywhere in our dependency tree. I'll look a bit more into this!

[PicoCentauri]

cargo tree told me it seems to live in a dev dependency of criterion -> regex -> regex-automata

[dev-dependencies]
├── criterion v0.4.0
│   ├── anes v0.1.6
│   ├── atty v0.2.14
│   │   └── libc v0.2.148
│   ├── cast v0.3.0
│   ├── ciborium v0.2.1
│   │   ├── ciborium-io v0.2.1
│   │   ├── ciborium-ll v0.2.1
│   │   │   ├── ciborium-io v0.2.1
│   │   │   └── half v1.8.2
│   │   └── serde v1.0.188 (*)
│   ├── clap v3.2.25
│   │   ├── bitflags v1.3.2
│   │   ├── clap_lex v0.2.4
│   │   │   └── os_str_bytes v6.5.1
│   │   ├── indexmap v1.9.3 (*)
│   │   └── textwrap v0.16.0
│   ├── criterion-plot v0.5.0
│   │   ├── cast v0.3.0
│   │   └── itertools v0.10.5
│   │       └── either v1.9.0
│   ├── itertools v0.10.5 (*)
│   ├── lazy_static v1.4.0
│   ├── num-traits v0.2.16 (*)
│   ├── oorandom v11.1.3
│   ├── plotters v0.3.5
│   │   ├── num-traits v0.2.16 (*)
│   │   ├── plotters-backend v0.3.5
│   │   └── plotters-svg v0.3.5
│   │       └── plotters-backend v0.3.5
│   ├── rayon v1.7.0 (*)
│   ├── regex v1.9.5
│   │   ├── regex-automata v0.3.8
│   │   │   └── regex-syntax v0.7.5
│   │   └── regex-syntax v0.7.5
│   ├── serde v1.0.188 (*)
│   ├── serde_derive v1.0.188 (proc-macro) (*)
│   ├── serde_json v1.0.107 (*)
│   ├── tinytemplate v1.2.1
│   │   ├── serde v1.0.188 (*)
│   │   └── serde_json v1.0.107 (*)
│   └── walkdir v2.4.0
│       └── same-file v1.0.6

[Luthaf]

Ok, it seems painful to remove regex from criterion, so we can bump!

[PicoCentauri]

Bump it is!