feat(TCK): Add `AccountUpdate` method

[0xivanov]

Description: AccountUpdate for the TCK server.

Related issue(s):

Fixes #1018

Notes for reviewer:

Checklist

• [x] Documented (Code comments, README, etc.)
• [x] Tested (unit, integration, etc.)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 73.55%. Comparing base (52fdd40) to head (5005868). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1020 +/- ## ======================================= Coverage 73.55% 73.55% ======================================= Files 168 168 Lines 23755 23755 ======================================= Hits 17473 17473 Misses 5576 5576 Partials 706 706 ```

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[sonarcloud[bot]]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud