"Using Renovate to manage updates to go install commands" doesn't quite work when a module import name isn't used
```
DEBUG: packageFiles with updates (repository=grafana/loki, baseBranch=main)
"config": {
"regex": [
{
"deps": [
{
"depName": "github.com/go-delve/delve/cmd/dlv",
"currentValue": "v1.20.2",
"datasource": "go",
"replaceString": "go install github.com/go-delve/delve/cmd/dlv@v1.20.2",
"updates": [],
"packageName": "github.com/go-delve/delve/cmd/dlv",
"warnings": [],
"versioning": "semver",
"sourceUrl": "https://github.com/go-delve/delve"
}
],
"matchStrings": [
"go install (?<depName>[^@]+?)@(?<currentValue>v[0-9.-a-zA-Z]+)"
],
"datasourceTemplate": "go",
"packageFile": "tools/dev/loki-boltdb-storage-s3/dev.dockerfile"
}
]
}
```
Should have update to `v1.21.0`, but isn't detected as `/cmd/dlv` is there.
issue