chore(deps): bump github.com/cloudevents/sdk-go/v2

Bumps [github.com/cloudevents/sdk-go/v2](https://github.com/cloudevents/sdk-go) from 2.13.0 to 2.15.2.
- [Release notes](https://github.com/cloudevents/sdk-go/releases)
- [Commits](cloudevents/sdk-go@v2.13.0...v2.15.2)

---
updated-dependencies:
- dependency-name: github.com/cloudevents/sdk-go/v2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

extensions/knative/generator/go.mod

@@ -25,7 +25,7 @@ require (
 	github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/cloudevents/sdk-go/sql/v2 v2.13.0 // indirect
-	github.com/cloudevents/sdk-go/v2 v2.13.0 // indirect
+	github.com/cloudevents/sdk-go/v2 v2.15.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emicklei/go-restful/v3 v3.9.0 // indirect
 	github.com/evanphx/json-patch/v5 v5.7.0 // indirect

extensions/knative/generator/go.sum

@@ -123,8 +123,8 @@ github.com/cloudevents/sdk-go/sql/v2 v2.13.0 h1:gMJvQ3XFkygY9JmrusgK80d9yRAb8+J3
 github.com/cloudevents/sdk-go/sql/v2 v2.13.0/go.mod h1:XZRQBCgRreddIpQrdjBJQUrRg3BCs3aikplJQkHrK44=
 github.com/cloudevents/sdk-go/v2 v2.4.1/go.mod h1:MZiMwmAh5tGj+fPFvtHv9hKurKqXtdB9haJYMJ/7GJY=
 github.com/cloudevents/sdk-go/v2 v2.8.0/go.mod h1:GpCBmUj7DIRiDhVvsK5d6WCbgTWs8DxAWTRtAwQmIXs=
-github.com/cloudevents/sdk-go/v2 v2.13.0 h1:2zxDS8RyY1/wVPULGGbdgniGXSzLaRJVl136fLXGsYw=
-github.com/cloudevents/sdk-go/v2 v2.13.0/go.mod h1:xDmKfzNjM8gBvjaF8ijFjM1VYOVUEeUfapHMUX1T5To=
+github.com/cloudevents/sdk-go/v2 v2.15.2 h1:54+I5xQEnI73RBhWHxbI1XJcqOFOVJN85vb41+8mHUc=
+github.com/cloudevents/sdk-go/v2 v2.15.2/go.mod h1:lL7kSWAE/V8VI4Wh0jbL2v/jvqsm6tjmaQBSvxcv4uE=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=