DAOS-18644 build: require mercury-libfabric or mercury-ucx

[soumagne]

Bump mercury package release

Steps for the author:

• Commit message follows the guidelines.
• Appropriate Features or Test-tag pragmas were used.
• Appropriate Functional Test Stages were run.
• At least two positive code reviews including at least one code owner from each category referenced in the PR.
• Testing is complete. If necessary, forced-landing label added and a reason added in a comment.

After all prior steps are complete:

• Gatekeeper requested (daos-gatekeeper added as a reviewer).

[github-actions]

Ticket title is 'Packaging: add Requires: (mercury-libfabric or mercury-ucx)'
Status is 'In Progress'
Labels: 'scrubbed_2.8'
https://daosio.atlassian.net/browse/DAOS-18644