Bump github.com/gorilla/websocket

Bumps [github.com/gorilla/websocket](https://github.com/gorilla/websocket) from 0.0.0-20170926233335-4201258b820c to 1.5.0.
- [Release notes](https://github.com/gorilla/websocket/releases)
- [Commits](https://github.com/gorilla/websocket/commits/v1.5.0)

---
updated-dependencies:
- dependency-name: github.com/gorilla/websocket
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

go.mod

@@ -3,6 +3,6 @@ module github.com/grafana/grafana-starter-datasource-backend
 go 1.16
 
 require (
-	github.com/gorilla/websocket v0.0.0-20170926233335-4201258b820c
+	github.com/gorilla/websocket v1.5.0
 	github.com/grafana/grafana-plugin-sdk-go v0.158.0
 )