[Sync] Update project files from source repository (9def984)

[mrz1836]

What Changed

• Added new github-token input parameter to setup-go-with-cache action for private module authentication, with default value of empty string
• Added new step "🔐 Configure private module authentication" that conditionally runs when both github-token input and GOPRIVATE environment variable are set
• Configured git to use token-based HTTPS authentication for GitHub URLs via git config --global url substitution
• Automatically set GONOSUMDB to match GOPRIVATE if not explicitly configured
• Updated parse-env action to use ENV_JSON environment variable instead of direct shell parameter substitution

Why It Was Necessary

• Enable workflows to authenticate and fetch private Go modules from GitHub repositories during build and test operations
• Improve security by using GitHub tokens for private module access instead of requiring manual git configuration
• Prevent checksum database lookups for private modules by automatically configuring GONOSUMDB to match GOPRIVATE patterns

Testing Performed

• Verified the conditional step only executes when both github-token input is provided and GOPRIVATE is set in the environment
• Validated git URL rewriting configuration correctly substitutes HTTPS URLs with token-based authentication
• Confirmed GONOSUMDB environment variable is properly set when not explicitly configured

Impact / Risk

• Low Risk: Changes are purely additive - existing workflows without private modules are unaffected
• Backward Compatible: New github-token input defaults to empty string, making authentication opt-in
• Security Improvement: Tokens are passed via environment variables and masked in logs, following GitHub Actions security best practices