Azure Firewall Extension Using deprecated pkg_resources in pip package SetupTools

### Describe the bug

Whenever any az network firewall commands are run a warning is displayed about using a deprecated API

### Related command

az network firewall list -g $firewallRg

### Errors

.azure\cliextensions\azure-firewall\azext_firewall\vendored_sdks\__init__.py:6: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
__import__('pkg_resources').declare_namespace(__name__)

### Issue script & Debug output

cli.knack.cli: Command arguments: ['network', 'firewall', 'list', '-g', 'My-Firewall-Rg', '--debug']
cli.knack.cli: __init__ debug log:
Enable color in terminal.
cli.knack.cli: Event: Cli.PreExecute []
cli.knack.cli: Event: CommandParser.OnGlobalArgumentsCreate [, , ]
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableCreate []
cli.azure.cli.core: Modules found from index for 'network': ['azure.cli.command_modules.network', 'azure.cli.command_modules.privatedns', 'azext_firewall']
cli.azure.cli.core: Loading command modules:
cli.azure.cli.core: Name Load Time Groups Commands
cli.azure.cli.core: network 2.419 120 480
cli.azure.cli.core: privatedns 0.109 14 60
cli.azure.cli.core: Total (2) 2.528 134 540
cli.azure.cli.core: These extensions are not installed and will be skipped: ['azext_ai_examples', 'azext_next']
cli.azure.cli.core: Loading extensions:
cli.azure.cli.core: Name Load Time Groups Commands Directory
cli.azure.cli.core: azure-firewall 0.221 21 67 C:\Users\user\.azure\cliextensions\azure-firewall
cli.azure.cli.core: Total (1) 0.221 21 67
cli.azure.cli.core: Loaded 153 groups, 607 commands.
cli.azure.cli.core: Found a match in the command table.
cli.azure.cli.core: Raw command : network firewall list
cli.azure.cli.core: Command table: network firewall list
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableTruncate []
cli.azure.cli.core.azlogging: metadata file logging enabled - writing logs to 'C:\Users\user\.azure\commands\2025-11-07.16-24-49.network_firewall_list.36744.log'.
az_command_data_logger: command args: network firewall list -g {} --debug
cli.knack.cli: Event: CommandInvoker.OnPreArgumentLoad [.add_subscription_parameter at 0x0000027B27F025C0>]
C:\Users\user\.azure\cliextensions\azure-firewall\azext_firewall\vendored_sdks\__init__.py:6: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
__import__('pkg_resources').declare_namespace(__name__)
cli.knack.cli: Event: CommandInvoker.OnPostArgumentLoad []

### Expected behavior

No warnings are shown

### Environment Summary

azure-cli 2.79.0

core 2.79.0
telemetry 1.1.0

Extensions:
account 0.2.5
azure-devops 1.0.2
azure-firewall 2.0.0
connectedmachine 2.0.0b2
scheduled-query 1.0.0b1
ssh 2.0.6

Dependencies:
msal 1.34.0b1
azure-mgmt-resource 23.3.0

Python location 'C:\Program Files\Microsoft SDKs\Azure\CLI2\python.exe'
Config directory 'C:\Users\user\.azure'
Extensions directory 'C:\Users\user\.azure\cliextensions'

Python (Windows) 3.13.9 (tags/v3.13.9:8183fa5, Oct 14 2025, 14:09:13) [MSC v.1944 64 bit (AMD64)]

Legal docs and information: aka.ms/AzureCliLegal

### Additional context

I'm aware of similar tickets with the same error for other extensions. It looks like it needs to be fixed in all extensions that use setuptools