Inherit default igwn-alert server from client

igwn-alert introduced an API change in the client in 0.6, in which many of the keyword arguments don't accept None anymore. I've updated the configuration here to inherit DEFAULT_SERVER from the client and use that as the default instead.

This is backwards compatible with any version of the client.

Does this mean we can drop the igwn-alert < 0.6 requirement?

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approved this merge request

added 4 commits

• ab2683b5...f07fc81c - 3 commits from branch emfollow:main
• efe08c3d - inherit default igwn-alert server from client

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enabled an automatic merge when the pipeline for efe08c3d succeeds

merged

mentioned in merge request !1280 (closed)

changed milestone to %GWCelery v2.3.1 Release