fix caching on azure

[danbugs]

Description of the bug
Our caching has been working somewhat intermittently.

I've ran our pipelines after an empty commit to see our caching take place. On the same agent, we got:

• a cache hit:
  https://dev.azure.com/spiderlightning/slight/_build/results?buildId=357&view=logs&j=70fcc8e8-cc68-58a0-49dd-bf3991baaf6b&t=a1c8d2d5-f3e0-5740-cb25-d150119fd493
• a cache miss:
  https://dev.azure.com/spiderlightning/slight/_build/results?buildId=357&view=logs&j=70fcc8e8-cc68-58a0-49dd-bf3991baaf6b&t=5cfd1f4a-b154-515d-6662-392410763baa

That said, most of them result in cache misses. Checking the caching post job, I see:

It should say:

I'm not too sure what's causing this issue. The keys are fine, and the path is correct — I've tried multiple configurations, and even changing to CacheBeta.

To Reproduce
n/a

Additional context
n/a