seqNum param need to be a string during replication

[adzialocha]

Closes #199

📋 Checklist

• Add tests that cover your changes
• Add this PR to the Unreleased section in CHANGELOG.md
• Link this PR to any issues it closes
• New files contain a SPDX license header

[codecov]

Codecov Report

Merging #256 (32ca50b) into main (0bf77f5) will not change coverage.
The diff coverage is 0.00%.

❗ Current head 32ca50b differs from pull request most recent head bb7a4b3. Consider uploading reports for the commit bb7a4b3 to get more accurate results

@@           Coverage Diff           @@
##             main     #256   +/-   ##
=======================================
  Coverage   94.00%   94.00%           
=======================================
  Files          59       59           
  Lines        4924     4924           
=======================================
  Hits         4629     4629           
  Misses        295      295           

Impacted Files	Coverage Δ
aquadoggo/src/graphql/replication/client.rs	85.71% <0.00%> (ø)

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