Pin gcp version to 3.0.4 for now

[craig-willis]

Fixes whole-tale/globus_handler#1 :

Problem:
Apparently globusconnectpersonal v3.1.x changed the setup process, breaking support for the -dir flag. This PR pins the gcp version to 3.0.4, which works.

To Test:

• Build and start Girder image using this PR or use craigwillis/girder:gcp-3.0.4
• Create a new Tale
• Register doi:10.18126/M2301J and add tale
• Start tale, open console
• cd ../data/Twin-mediated... and cat globus_metadata.json
• You should see the file contents instead of the error in Globus transfer handling fails to initialize globus_handler#1

For grins:

$ docker exec --user girder -it <girder> bash

$ /opt/globusconnectpersonal/globusconnectpersonal -version
Globus Connect Personal 3.0.4

$ tail /home/girder/.girder/logs/error.log

[2022-02-15 15:36:46,565] INFO: Output from command ('/opt/globusconnectpersonal/globusconnectpersonal', '-dir', '/home/girder/.WholeTale/0baa7c04-1ff6-4cf5-82b3-00dd47e828d9', '-setup', '6a2e2ba2-f5af-406e-a37d-547479f879e4'): b"Could not read the directory '/home/girder/.WholeTale/0baa7c04-1ff6-4cf5-82b3-00dd47e828d9' with configuration files.\nCreating the directory... Done\nConfiguration directory: /home/girder/.WholeTale/0baa7c04-1ff6-4cf5-82b3-00dd47e828d9/lta\nContacting relay.globusonline.org:2223\nDone!\n", b''