* Upgrade go version in CI.
* Add toolchain to pin version.
* Add linter/fumpt as pinned version in tools.
* Run `go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...`
This will cause key paths to mismatch and not be sent.
Example:
```
λ go build&&mc stat -enc-c="play/testbucket/=MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTIzNDU2Nzg5MDA" play/testbucket/mc
Name : mc
Date : 2025-07-02 17:52:42 CEST
Size : 43 MiB
ETag : 398345f23dc2ad4dd277e437e6ca7a1d-3
Type : file
Encryption: SSE-C
Metadata :
Content-Type: application/x-msdownload
```
