Remove Application Insights connection string output from infrastructure template

[Copilot]

This PR applies the same infrastructure best practices changes from PR #18 in functions-quickstart-dotnet-azd to align this Python template with current Azure Functions deployment standards.

Changes Made

Infrastructure Updates

• Removed APPLICATIONINSIGHTS_CONNECTION_STRING output from infra/main.bicep
  • This output is no longer needed as Application Insights connection is now handled internally through managed identity authentication
  • Aligns with security best practices by reducing exposed connection strings

Analysis of Other PR #18 Changes

After reviewing the .NET repository changes, the following were determined to be not applicable to this Python repository:

• Package Updates: The current azure-functions package without version pinning in requirements.txt is the recommended approach for Azure Functions Python apps, allowing the runtime to manage compatibility
• User Secrets Removal: No Python equivalent of .NET's UserSecretsId configuration exists in this repository

Benefits

• Improves security posture by removing unnecessary connection string outputs
• Aligns with current Azure Functions deployment best practices
• Maintains consistency across Azure Functions quickstart templates

This change brings the Python template in line with the .NET template's infrastructure improvements while respecting the differences in Python vs .NET Azure Functions development patterns.

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• aka.ms
  • Triggering command: bicep build main.bicep (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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