chore(deps): update dependency cronos to v0.8.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Cronos	0.7.1 -> 0.8.4

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Release Notes

HangfireIO/Cronos (Cronos)

v0.8.4: 0.8.4

Release Notes

• Project – Add an icon for the NuGet package.

v0.8.3: 0.8.3

Release Notes

• Project – Sign NuGet package and assemblies with a company certificate and add HangfireIO owner.
• Project – Enable required signature validation mode when restoring packages.
• Project – Migrate to the Hangfire.Build system to be consistent with other projects.

v0.8.2: 0.8.2

Release Notes

• Changed – Disable deterministic source paths for source link to work better when merged using ILRepack.

v0.8.1: 0.8.1

Release Notes

• Project – Don't embed full source code into assemblies to reduce package size by ~50%.

v0.8.0: 0.8.0

Release Notes

• Added – Make common cron expressions like CronExpression.Hourly publicly accessible.
• Added – Add the CronExpression.TryParse method to allow checking cron expressions.
• Changed – MaxYear constant is now bumped to 2499, so we have more years now (by @​FaithfulDev).
• Changed – Throw an exception when date exceeds the MaxYear value (by @​FaithfulDev).
• Fixed – Consider TimeZoneInfo.BaseUtcOffset is a subject to change between years.
• Fixed – Don't include seconds in the ToString method's result when they weren't passed.
• Project – Modernize everything, include testing against the net6.0 target.
• Project – Project files have been updated to enable SourceLink with embedded symbols.
• Project – Enable static analysis via the Microsoft.CodeAnalysis.NetAnalyzers package.

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