Support Globus 4.0

[forsyth2]

Request criteria

• I searched the zstash GitHub Discussions to find a similar question and didn't find it.
• I searched the zstash documentation.
• This issue does not match the other templates (i.e., it is not a bug report, documentation request, feature request, or a question.)

Issue description

For zstash v1.5.0, we had to pin - globus-sdk >=3.15.0,<4.0 to avoid AttributeError: 'TransferClient' object has no attribute 'endpoint_autoactivate', as noted in https://github.com/E3SM-Project/zstash/pull/393/files#r2441459879. Ideally, we can relax the version restrictions by changing the code appropriately.

[forsyth2]

Claude's suggestion was:

tc = globus_sdk.TransferClient(authorizer=authorizer)
tc.endpoint_activate(endpoint_id, if_expires_in=3600)

We'll have to test that thoroughly to make sure it doesn't break any functionality.

It also noted:

The endpoint_activate method now handles auto-activation automatically. The if_expires_in parameter (optional) specifies that activation should only occur if the endpoint will expire within that many seconds.