fix: Invalid inequality operator in ArgoCD custom health for ProviderConfig

[illrill]

Fixes mistake by #673. In Lua, the inequality operator is ~= not !=. This caused an ArgoCD ComparisonError and sync failure.

error setting app health: failed to get resource health for "ProviderConfig" with name "azure" in namespace "": <string> line:27(column:56) near '!': Invalid token

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[denzhel]

Damn you're fast ... I was having this issue yesterday and I couldn't figure out what is the problem.
Refreshed the page and noticed that I had the ! missing .. what are the odds that they fixed it that quick ..
Thank you !!