Release 3.10.0 beta.3 (#345)

* chore: run go-generate

See https://github.com/ooni/probe/issues/1468

* chore: update all the dependencies

Unclear to me why `go get -u -v ./...` did not actually update
all of them and I needed to spell out each of them and force to
update by going `go get -u -v $pkg@latest` ¯\_(ツ)_/¯.

Part of https://github.com/ooni/probe/issues/1468

* fix(c/o/i/d/actions_test.go): ensure we check for return value

Part of https://github.com/ooni/probe/issues/1468

* chore: update the user agents we use

See https://github.com/ooni/probe/issues/1468

* chore: set version to 3.10.0-beta.3

See https://github.com/ooni/probe/issues/1468

* chore: use probe-assets v0.3.1

Part of https://github.com/ooni/probe/issues/1468

internal/engine/ooapi/swagger_test.go

@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2021-04-26 14:35:22.20867232 +0200 CEST m=+0.000560530
+// 2021-05-12 09:15:08.888123159 +0200 CEST m=+0.000883704
 
 package ooapi
 
@@ -9,7 +9,7 @@ const swagger = `{
     "swagger": "2.0",
     "info": {
         "title": "OONI API specification",
-        "version": "0.20210426.4123522"
+        "version": "0.20210512.5071508"
     },
     "host": "api.ooni.io",
     "basePath": "/",