Add web3-bot to go-libp2p-pubsub

[galargh]

This is part of the effort to deprecate CircleCI across the organization

[github-actions]

The following access changes will be introduced as a result of applying the plan:

Access Changes

User web3-bot:
  - will gain push permission to go-libp2p-pubsub

[github-actions]

Before merge, verify that all the following plans are correct. They will be applied as-is after the merge.

Terraform plans

libp2p

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # github_repository_collaborator.this["go-libp2p-pubsub:web3-bot"] will be created
  + resource "github_repository_collaborator" "this" {
      + id                          = (known after apply)
      + invitation_id               = (known after apply)
      + permission                  = "push"
      + permission_diff_suppression = false
      + repository                  = "go-libp2p-pubsub"
      + username                    = "web3-bot"
    }

Plan: 1 to add, 0 to change, 0 to destroy.