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

Bumps [github.com/cloudevents/sdk-go](https://github.com/cloudevents/sdk-go) from 1.2.0 to 2.15.2+incompatible.
- [Release notes](https://github.com/cloudevents/sdk-go/releases)
- [Commits](cloudevents/sdk-go@v1.2.0...v2.15.2)

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

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

go.mod

@@ -5,7 +5,6 @@ go 1.22.1
 toolchain go1.23.2
 
 require (
-	github.com/cloudevents/sdk-go v1.2.0
 	github.com/cloudevents/sdk-go/v2 v2.15.2
 	github.com/go-resty/resty/v2 v2.16.1
 	github.com/stretchr/testify v1.9.0
@@ -15,16 +14,12 @@ require (
 
 require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/lightstep/tracecontext.go v0.0.0-20181129014701-1757c391b1ac // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	go.opencensus.io v0.24.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	golang.org/x/net v0.31.0 // indirect