chore(tvix): upgrade workspace.resolver to "2" r/6599

This shuts off the following warning:

```
warning: some crates are on edition 2021 which defaults to `resolver = "2"`, but virtual workspaces default to `resolver = "1"`
note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
```

Stuff still seems to work with it, so no need to stick with "1".

See https://doc.rust-lang.org/edition-guide/rust-2021/default-cargo-resolver.html
for more details.

Change-Id: I6056d95cd5cb793f37ef843ed43009a27ad36367
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9342
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Reviewed-by: Connor Brewster <cbrewster@hey.com>
Tested-by: BuildkiteCI

0 files changed, 0 insertions, 0 deletions