fix: update go.work to match minimum 1.22

[muncus]

Description

Fixes #

Note: Before submitting a pull request, please open an issue for discussion if you are not associated with Google.

Checklist

• I have followed Contributing Guidelines from CONTRIBUTING.MD
• Tests pass: go test -v ./.. (see Testing)
• Code formatted: gofmt (see Formatting)
• Vetting pass: go vet (see Formatting)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[code-review-assist]

Hi team,

I'm currently reviewing this pull request and will provide my feedback shortly. In the meantime, here's a summary for you and other reviewers to quickly get up to speed:

This pull request, submitted by @muncus, aims to update the go.work file to reflect the minimum Go version 1.22. The primary change involves modifying the Go version specification in go.work from go 1.21.13 to go 1.22.

Here's a breakdown of the changes:

• File Changed: go.work
• Change: Updated the Go version from go 1.21.13 to go 1.22 (line 1).

The rest of the go.work file remains unchanged. The toolchain line (line 3) specifying go1.22.7 remains consistent with the updated Go version.

I'll provide a more detailed review shortly, but this summary should give everyone a quick overview of the changes.

---

A little poem to brighten your day:

Go versions rise,
Code updates, smooth and swift,
New features gleam.

Best,
Gemini/code-review-assist

[code-review-assist]

This pull request updates the Go version specified in the go.work file to 1.22. This change is necessary to ensure that the project uses a supported Go version and benefits from the latest features and improvements. The change is small and straightforward, and the pull request description includes the necessary checklist items. However, I have a few minor suggestions for improvement.