update GitHub Actions to use ubuntu-latest instead of buildjet-8vcpu-…

[kpob]

…ubuntu-2204

[llamapreview]

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Review Status: Automated Review Skipped

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Thank you for your Pull Request. LlamaPReview has analyzed your changes and determined that this PR does not require an automated code review.

Analysis Result:

PR contains only modifications to GitHub Actions workflow files, changing the runner from a specific buildjet configuration to the standard ubuntu-latest. These changes are purely operational and do not impact core logic, security, or functionality. They are limited to CI/CD configuration updates.

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[github-actions]

Benchmark report

Action	Details	Gas diff
Wasm Deploy	Filename: Benchmark.wasm	🟢 -40.422668153 CSPR (13.02%)
Contract Call	Entry point: set_variable	🟢 -0.000294075 CSPR (0.21%)
Contract Call	Entry point: get_variable	🟢 -0.00042597 CSPR (0.08%)
Contract Call	Entry point: set_struct_variable	🟢 -0.00000525 CSPR (0.00%)
Contract Call	Entry point: get_struct_variable	🔴 +0.00192744 CSPR (0.51%)
Contract Call	Entry point: set_mapping	🟢 -0.000254535 CSPR (0.18%)
Contract Call	Entry point: get_mapping	🔴 +0.00134586 CSPR (0.39%)
Contract Call	Entry point: push_list	🟢 -0.00042783 CSPR (0.15%)
Contract Call	Entry point: get_list	🔴 +0.00139242 CSPR (0.40%)
Contract Call	Entry point: init_submodule	🔴 +0.002051025 CSPR (0.23%)
Contract Call	Entry point: call_submodule	🔴 +0.0010608 CSPR (0.31%)
Contract Call	Entry point: call_payable	🔴 +0.00516006 CSPR (0.09%)
Contract Call	Entry point: transfer_back	🔴 +0.000439485 CSPR (0.02%)
Contract Call	Entry point: emit_event	🔴 +0.00015501 CSPR (0.12%)
Contract Call	Entry point: set_named_key	🟢 -0.000067935 CSPR (0.04%)
Contract Call	Entry point: get_named_key	🔴 +0.00158328 CSPR (0.43%)
Contract Call	Entry point: set_dictionary	🟢 -0.000379125 CSPR (0.13%)
Contract Call	Entry point: get_dictionary	🔴 +0.001392225 CSPR (0.40%)