Remove trailing blank line in GatewayV2.t.sol

[Copilot]

Addresses code style feedback from #1676 regarding file-ending consistency.

Changes

• Removed trailing blank line at EOF in contracts/test/GatewayV2.t.sol to match formatting convention used across all other test files in the codebase (Agent.t.sol, BeefyClient.t.sol, etc.)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.04%. Comparing base (f418da7) to head (e8e79d1).
⚠️ Report is 2 commits behind head on ron/multi-contract-calls.

Additional details and impacted files

@@                    Coverage Diff                    @@
##           ron/multi-contract-calls    #1686   +/-   ##
=========================================================
  Coverage                     81.04%   81.04%           
=========================================================
  Files                            22       22           
  Lines                          1029     1029           
  Branches                        191      191           
=========================================================
  Hits                            834      834           
  Misses                          178      178           
  Partials                         17       17           

Flag	Coverage Δ
solidity	81.04% <ø> (ø)

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