Make IPDX org admins

[galargh]

We need to update/delete org secrets and clean up App setup.

[github-actions]

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

Terraform plans

probe-lab

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # github_membership.this["galargh"] will be updated in-place
  ~ resource "github_membership" "this" {
        id       = "probe-lab:galargh"
      ~ role     = "member" -> "admin"
        # (2 unchanged attributes hidden)
    }

  # github_membership.this["laurentsenta"] will be updated in-place
  ~ resource "github_membership" "this" {
        id       = "probe-lab:laurentsenta"
      ~ role     = "member" -> "admin"
        # (2 unchanged attributes hidden)
    }

Plan: 0 to add, 2 to change, 0 to destroy.