fix: service registry and multisig migrations fix

[eguajardo]

Description

• Update coordinator_contract address in service registry migration
• Restore migrations for multisig
• Update multisig migration to remove signing session instead of trying to migrate them
• Increase patch version for service registry and multisig

Todos

• [ ] Unit tests
• [ ] Manual tests
• [ ] Documentation
• [ ] Connect epics/issues

Steps to Test

Expected Behaviour

Other Notes

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 92.42424% with 5 lines in your changes missing coverage. Please review.

Please upload report for BASE (release/v0.5.x@6d6b974). Learn more about missing BASE report.

Files	Patch %	Lines
contracts/service-registry/src/contract.rs	0.00%	3 Missing :warning:
contracts/multisig/src/contract.rs	0.00%	1 Missing :warning:
contracts/service-registry/src/msg.rs	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release/v0.5.x #487 +/- ## ================================================= Coverage ? 93.28% ================================================= Files ? 176 Lines ? 23304 Branches ? 0 ================================================= Hits ? 21739 Misses ? 1565 Partials ? 0 ```

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