chore(deps): backport go-libs migrator index name fix to release/v2.3

[Dav-14]

Summary

Backport of the go-libs migrator index name fix to ledger release/v2.3. Bumps github.com/formancehq/go-libs/v3 from v3.6.1 to v3.6.2.

Pulls in formancehq/go-libs#596 (backport of #594 to release/v3.6) which fixes a hardcoded idx_version_id name collision between migrators sharing a schema. The bug crashes services with SQLSTATE 42P10 at startup. Affected DBs self-heal on next deploy — no manual SQL required.

Companion to #1331 (main) and #1332 (release/v2.2).

Test plan

• go mod tidy clean
• go build ./... succeeds
• CI green

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.52%. Comparing base (5f49293) to head (1e5aad2).

Additional details and impacted files

@@               Coverage Diff                @@
##           release/v2.3    #1333      +/-   ##
================================================
+ Coverage         81.50%   81.52%   +0.02%     
================================================
  Files               187      187              
  Lines              9202     9202              
================================================
+ Hits               7500     7502       +2     
+ Misses             1253     1251       -2     
  Partials            449      449              

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