[Misc] Update xrootd-ssi-protobuf-interface to v1.27
Description
This commit updates the xrootd-ssi-protobuf-interface submodule to the version that contains the changes required for the implementation of the cta-admin ls commands with grpc
Checklist
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Documentation reflects the changes made. -
Merge Request title is clear, concise, and suitable as a changelog entry. See our contributing docs
References
Closes #1289 (closed)
Edited by Konstantina Skovola