Improve release notes cache validation by major.minor

Updated the logic to check for cached GitHub release notes to match the current major.minor version series using semantic versioning, instead of only matching the full release tag. This ensures that release notes are refreshed only when the major.minor version changes, improving cache efficiency.

Author: JohnDuprey

Modules/CIPPCore/Public/Entrypoints/HTTP Functions/Tools/GitHub/Invoke-ListGitHubReleaseNotes.ps1

@@ -32,14 +32,31 @@
     $Rows = Get-CIPPAzDataTableEntity @Table -filter $Filter
 
     try {
+        $Latest = $false
         if ($Rows) {
             $Releases = ConvertFrom-Json -InputObject $Rows.GitHubReleases -Depth 10
-            if ($Releases.releaseTag -notmatch $global:CippVersion) {
-                $Releases = $null
+            $CurrentVersion = [semver]$global:CippVersion
+            $CurrentMajorMinor = "$($CurrentVersion.Major).$($CurrentVersion.Minor)"
+
+            foreach ($Release in $Releases) {
+                $Version = $Release.releaseTag -replace 'v', ''
+                try {
+                    $ReleaseVersion = [semver]$Version
+                    $ReleaseMajorMinor = "$($ReleaseVersion.Major).$($ReleaseVersion.Minor)"
+
+                    # Check if we have cached notes for the current major.minor version series
+                    if ($ReleaseMajorMinor -eq $CurrentMajorMinor) {
+                        $Latest = $true
+                        break
+                    }
+                } catch {
+                    # Skip invalid semver versions
+                    continue
+                }
             }
         }
 
-        if (-not $Releases) {
+        if (-not $Latest) {
             $Releases = Invoke-GitHubApiRequest -Path $ReleasePath
             $Releases = $Releases | ForEach-Object {
                 [ordered]@{