Minor version update for the Flare Sentinel: V2.2.0

[ireydiak]

Summary:
Minor version update (v2.2.0) for the Flare Sentinel Solution.
This release fixes Analytic Rules that fail when columns don't exist yet, and introduces release notes to improve transparency around code changes..

Change(s):

• Fixed Analytic Rules to use column_ifexists() for defensive querying
• Fixed risk score comparisons (was comparing numbers to strings)
• Added ReleaseNotes.md file

Reason for Change(s):

• Resolves errors when creating Analytic Rules before data is ingested
• Allows customers to enable rules immediately without waiting for data
• Improves communication with customers via release notes

Version updated:
No

Testing Completed:

• Created a custom deployment using the "Deploy custom template" in Azure and pasted the mainTemplate.yaml content generated by the createSolutionV3.ps1 utility script.
• Validated Analytic Rules syntax in Microsoft Sentinel environment.
• Confirmed Analytic Rules queries execute without errors.
• Confirmed Workbook creation execute without errors.

Checked that the validations are passing and have addressed any issues that are present:

• Yes

[ireydiak]

File autogenerated by the createSolutionV3.ps1 script.

[ireydiak]

File autogenerated by the createSolutionV3.ps1 script.

[ireydiak]

File autogenerated by the createSolutionV3.ps1 script.

[ireydiak]

Rule deleted because the field does not exist and no suitable replacement was found. Customers have also reported issues with this rule.

[ireydiak]

I opened the same PR on the origin repo here: Azure#13301