Update module gopkg.in/yaml.v2 to v3 (#38547)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [gopkg.in/yaml.v2](https://redirect.github.com/go-yaml/yaml) |
`v2.4.0` -> `v3.0.1` |
[![age](https://developer.mend.io/api/mc/badges/age/go/gopkg.in%2fyaml.v2/v3.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/go/gopkg.in%2fyaml.v2/v3.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/go/gopkg.in%2fyaml.v2/v2.4.0/v3.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/go/gopkg.in%2fyaml.v2/v2.4.0/v3.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

:warning: MAJOR VERSION UPDATE :warning: - please manually update this
package

---

### Release Notes

<details>
<summary>go-yaml/yaml (gopkg.in/yaml.v2)</summary>

###
[`v3.0.1`](https://redirect.github.com/go-yaml/yaml/compare/v3.0.0...v3.0.1)

[Compare
Source](https://redirect.github.com/go-yaml/yaml/compare/v3.0.0...v3.0.1)

###
[`v3.0.0`](https://redirect.github.com/go-yaml/yaml/compare/v2.4.0...v3.0.0)

[Compare
Source](https://redirect.github.com/go-yaml/yaml/compare/v2.4.0...v3.0.0)

</details>

---

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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Antoine Toulme <[email protected]>

Author: renovate[bot]

extension/observer/ecsobserver/go.mod

@@ -16,7 +16,7 @@ require (
 	go.uber.org/goleak v1.3.0
 	go.uber.org/multierr v1.11.0
 	go.uber.org/zap v1.27.0
-	gopkg.in/yaml.v2 v2.4.0
+	gopkg.in/yaml.v2 v2.2.8
 )
 
 require (