fix(rust): Sync standard configs bug (#326)

* fix(rust): Bring upstream rust earthly changes into the rust builders

* fix(rust): Add arguments to tune the rust builder to +SETUP

* fix(rust): Add --keep-ts to rust example projects

* refactor(rust): Move the FINGERPRINT_SRC function from cat-libs to cat-ci

* fix(rust): Try and set unique cache prefixes per repo.

* fix(rust): Remove OS identifier from the cache_prefix

* fix(rust): Make the cache architecture aware

* fix(rust): Add a changeable cache version tag

* fix(rust): By default, don't keep fingerprints in rust builds

* fix(rust): Fix bug in removing src fingerprints

* fix(cspell): spelling

* fix(rust): Only warn if a vulnerability is detected.

* fix(rust): Don't default STD_CONFIG to use the installer target.

earthly/rust/Earthfile

@@ -320,7 +320,6 @@ SETUP:
 # SYNC_STD_CFG : Syncs the standard config files locally.
 SYNC_STD_CFG:
     FUNCTION
-    FROM +installer
 
     SAVE ARTIFACT /stdcfgs/cargo_config.toml AS LOCAL .cargo/config.toml
     SAVE ARTIFACT /stdcfgs/clippy.toml AS LOCAL clippy.toml