chore: update rust test fixtures to latest

[spiffcs]

Description

Unit tests were failing for our rust cataloger because of an outdated version of cargo.

0.900 Caused by:
0.900   lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?

This updates the lockfile version and builder image to use the most recent cargo toolchain

• Fixes

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have added unit tests that cover changed behavior
• I have tested my code in common scenarios and confirmed there are no regressions
• I have added comments to my code, particularly in hard-to-understand sections