netbird: update to 0.66.2, patch for Go 1.26 build

netbird: update to 0.66.2, patch for Go 1.26 build

Changelog: https://github.com/netbirdio/netbird/releases/tag/v0.66.2

NetBird `v0.66.x` adds support for exposing a local HTTP service
from the CLI with the `netbird expose`[1] command, but only for
self-hosted deployments. Cloud support is coming.

[1]: https://docs.netbird.io/manage/reverse-proxy/expose-from-cli

---

`0.65.x` highlights

Changelog: https://github.com/netbirdio/netbird/releases/tag/v0.65.3

NetBird `v0.65.x` now includes a built-in reverse proxy[1], but only for
self-hosted deployments and is currently in beta. Cloud support is
coming soon.

Important: pre-shared keys or Rosenpass are currently incompatible with
the reverse proxy feature.

[1]: https://docs.netbird.io/manage/reverse-proxy

---

`v0.63.x` highlights

Changelog: https://github.com/netbirdio/netbird/releases/tag/v0.63.0

NetBird now supports private DNS zones[1].

[1]: https://docs.netbird.io/manage/dns/custom-zones

---

`v0.62.x` highlights

Changelog: https://github.com/netbirdio/netbird/releases/tag/v0.62.3

Upstream minimum Go requirement raised from `v1.24.x` to `v1.25.x`,
see the go.mod[1].

[1]: https://github.com/netbirdio/netbird/blob/v0.62.3/go.mod#L3-L5

---

Building `netbird` with Go 1.26.x fails with errors:

```
[...]
/builder/dl/go-mod-cache/gvisor.dev/gvisor@v0.0.0-20251031020517-ecfcdd2f171c/pkg/sync/runtime_constants_go126.go:22:2: WaitReasonSelect redeclared in this block
	/builder/dl/go-mod-cache/gvisor.dev/gvisor@v0.0.0-20251031020517-ecfcdd2f171c/pkg/sync/runtime_constants_go125.go:22:2: other declaration of WaitReasonSelect
/builder/dl/go-mod-cache/gvisor.dev/gvisor@v0.0.0-20251031020517-ecfcdd2f171c/pkg/sync/runtime_constants_go126.go:23:2: WaitReasonChanReceive redeclared in this block
	/builder/dl/go-mod-cache/gvisor.dev/gvisor@v0.0.0-20251031020517-ecfcdd2f171c/pkg/sync/runtime_constants_go125.go:23:2: other declaration of WaitReasonChanReceive
/builder/dl/go-mod-cache/gvisor.dev/gvisor@v0.0.0-20251031020517-ecfcdd2f171c/pkg/sync/runtime_constants_go126.go:24:2: WaitReasonSemacquire redeclared in this block
	/builder/dl/go-mod-cache/gvisor.dev/gvisor@v0.0.0-20251031020517-ecfcdd2f171c/pkg/sync/runtime_constants_go125.go:24:2: other declaration of WaitReasonSemacquire
[...]
```

Upstream Issue: https://github.com/netbirdio/netbird/issues/5290
Upstream PR: https://github.com/netbirdio/netbird/pull/5447

Signed-off-by: Wesley Gimenes <redacted>