Revert "Fetch latest ICU release version dynamically" (#27127)

tools/packaging/packaging.psm1

@@ -2152,7 +2152,7 @@ function Get-PackageDependencies
         #   than the build version and we know that older versions just works.
         #
         $MinICUVersion = 60                    # runtime minimum supported
-        $BuildICUVersion = Get-IcuLatestRelease
+        $BuildICUVersion = 76                  # current build version
         $MaxICUVersion = $BuildICUVersion + 30 # headroom
 
         if ($Distribution -eq 'deb') {
@@ -5809,15 +5809,3 @@ function Test-IsProductFile {
 
     return $false
 }
-
-# Get major version from latest ICU release (latest: stable version)
-function Get-IcuLatestRelease {
-    $response = Invoke-WebRequest -Uri "https://github.com/unicode-org/icu/releases/latest"
-    $tagUrl = ($response.Links | Where-Object href -like "*releases/tag/release-*")[0].href
-
-    if ($tagUrl -match 'release-(\d+)\.') {
-       return [int]$Matches[1]
-    }
-
-    throw "Unable to determine the latest ICU release version."
-}