chore(deps): bump github.com/coder/websocket (#161)

Bumps the go-dependencies group with 1 update in the / directory: [github.com/coder/websocket](https://github.com/coder/websocket).


Updates `github.com/coder/websocket` from 1.8.14 to 1.8.15
- [Release notes](https://github.com/coder/websocket/releases)
- [Commits](coder/websocket@v1.8.14...v1.8.15)

---
updated-dependencies:
- dependency-name: github.com/coder/websocket
  dependency-version: 1.8.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: go-dependencies
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

go.mod

@@ -3,7 +3,7 @@ module github.com/agentruntimecontrolprotocol/go-sdk
 go 1.25.0
 
 require (
-	github.com/coder/websocket v1.8.14
+	github.com/coder/websocket v1.8.15
 	github.com/go-chi/chi/v5 v5.3.0
 	github.com/google/uuid v1.6.0
 	github.com/oklog/ulid/v2 v2.1.1

go.sum

@@ -1,7 +1,7 @@
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/coder/websocket v1.8.14 h1:9L0p0iKiNOibykf283eHkKUHHrpG7f65OE3BhhO7v9g=
-github.com/coder/websocket v1.8.14/go.mod h1:NX3SzP+inril6yawo5CQXx8+fk145lPDC6pumgx0mVg=
+github.com/coder/websocket v1.8.15 h1:6B2JPeOGlpff2Uz6vOEH1Vzpi0iUz20A+lPVhPHtNUA=
+github.com/coder/websocket v1.8.15/go.mod h1:NX3SzP+inril6yawo5CQXx8+fk145lPDC6pumgx0mVg=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-chi/chi/v5 v5.3.0 h1:halUjDxhshgXHMrao5bB8eNBXo/rnzwr8m5m36glehM=