chore(deps): bump github.com/cloudevents/sdk-go/v2 from 2.15.1 to 2.15.2

Bumps [github.com/cloudevents/sdk-go/v2](https://github.com/cloudevents/sdk-go) from 2.15.1 to 2.15.2.
- [Release notes](https://github.com/cloudevents/sdk-go/releases)
- [Commits](cloudevents/sdk-go@v2.15.1...v2.15.2)

---
updated-dependencies:
- dependency-name: github.com/cloudevents/sdk-go/v2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -5,7 +5,7 @@ go 1.19
 require (
 	github.com/Microsoft/go-winio v0.6.1 // indirect
 	github.com/ahmetb/gen-crd-api-reference-docs v0.3.1-0.20220720053627-e327d0730470 // Waiting for https://github.com/ahmetb/gen-crd-api-reference-docs/pull/43/files to merge
-	github.com/cloudevents/sdk-go/v2 v2.15.1
+	github.com/cloudevents/sdk-go/v2 v2.15.2
 	github.com/containerd/containerd v1.7.14
 	github.com/go-git/go-git/v5 v5.11.0
 	github.com/google/go-cmp v0.6.0