mio bcacd6c396 testing/plakar: fix build with go 1.26
Bump swiss to fix build error with go 1.26.

```
../../tmp/go/github.com/cockroachdb/swiss@v0.0.0-20250624142022-d6e517c1d961/map.go:286:7: undefined: hashFn
../../tmp/go/github.com/cockroachdb/swiss@v0.0.0-20250624142022-d6e517c1d961/map.go:337:14: undefined: getRuntimeHasher
../../tmp/go/github.com/cockroachdb/swiss@v0.0.0-20250624142022-d6e517c1d961/map.go:338:22: undefined: fastrand64
../../tmp/go/github.com/cockroachdb/swiss@v0.0.0-20250624142022-d6e517c1d961/map.go:600:23: undefined: fastrand64
../../tmp/go/github.com/cockroachdb/swiss@v0.0.0-20250624142022-d6e517c1d961/map.go:649:19: undefined: fastrand64
../../tmp/go/github.com/cockroachdb/swiss@v0.0.0-20250624142022-d6e517c1d961/map.go:670:20: undefined: fastrand64
../../tmp/go/github.com/cockroachdb/swiss@v0.0.0-20250624142022-d6e517c1d961/options.go:30:14: undefined: hashFn
```
2026-03-07 04:20:09 +00:00
..