cargo publish does not generate a warning during --dry-run

### Problem

A cargo.toml file with invalid category does not generate warning with --dry-run but does when actually publishing to crates.io

Cargo.toml
```
[package]
categories = ["NOT VALID"]
```

### Steps

_No response_

### Possible Solution(s)

_No response_

### Notes

_No response_

### Version

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