chore: update all workflows to v0.2.20

[Copilot]

Summary

Updates all GitHub Actions reusable workflows from v0.2.19 to v0.2.20 to ensure the repository uses the latest workflow versions, including the updated linting workflow.

Changes

This PR updates the following workflow references across all workflow files:

commit-all.yaml

• golang-binary.yaml: v0.2.19 → v0.2.20
• golang-linting.yaml: v0.2.19 → v0.2.20
• golang-testing-small.yaml: v0.2.19 → v0.2.20

commit-main.yaml

• golang-binary.yaml: v0.2.19 → v0.2.20
• golang-security.yaml: v0.2.19 → v0.2.20

pull-request.yaml

• golang-security.yaml: v0.2.19 → v0.2.20

Additional Improvements

• Added main binary to .gitignore to prevent accidental commits of build artifacts

Verification

• ✅ All existing tests pass
• ✅ Build completes successfully
• ✅ All workflows now use consistent v0.2.20 version

Original prompt

update linting workflow to version 0.2.20 and ensure all workflows pass

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[Copilot]

Pull Request Overview

Updates all GitHub Actions workflow versions from v0.2.19 to v0.2.20 to ensure consistency and access to the latest workflow features across the repository.

• Updated version references for golang-binary, golang-linting, golang-testing-small, and golang-security workflows
• Standardized all workflow versions to v0.2.20 across commit-all.yaml, commit-main.yaml, and pull-request.yaml
• Enhanced build artifact management with .gitignore update

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
.github/workflows/pull-request.yaml	Updated golang-security workflow to v0.2.20
.github/workflows/commit-main.yaml	Updated golang-binary and golang-security workflows to v0.2.20
.github/workflows/commit-all.yaml	Updated golang-binary, golang-linting, and golang-testing-small workflows to v0.2.20

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