azure-cli-extensions.application-insights: relax isodate dependency
The application-insights extension requires isodate~=0.6.0 but nixpkgs
now has isodate 0.7.2 since commit ed08189.
All upstream versions (0.1.x through 2.0.0b1) have this constraint,
so relaxing the dependency check is the correct fix.
Similar fix was applied for pysolcast in commit fd08a22.
Fixes #497475
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>