`coderd/azureidentity TestValidate/regular` fails on MacOS

[coadler]

The failure is pretty consistent. I disabled it because we couldn't merge into main.

=== Failed
=== FAIL: coderd/azureidentity TestValidate/regular (0.21s)
    azureidentity_test.go:48: 
        	Error Trace:	/Users/runner/work/coder/coder/coderd/azureidentity/azureidentity_test.go:48
        	Error:      	Received unexpected error:
        	            	verify signature:
        	            	    github.com/coder/coder/v2/coderd/azureidentity.Validate
        	            	        /Users/runner/work/coder/coder/coderd/azureidentity/azureidentity.go:75
        	            	  - x509: “metadata.azure.com” certificate is not standards compliant
        	Test:       	TestValidate/regular

https://github.com/coder/coder/actions/runs/8711094713/job/23894454967