Update veraison/corim dependency version with latest changes

[shubhajeet-dey-fj]

It is requested to update veraison/corim dependency of services to latest version.
As latest version contains some breaking changes (which affects sub dependencies as well) and also contains discovery document implementation, which is required to implement eds client as mentioned #387

services/go.mod

Line 43 in 34992b8

github.com/veraison/corim v1.1.3-0.20260430132037-b8653a7359da

[atulfj]

++

And this would call for some (major?) refactoring in the CoSERV service part as well.