fix corpus fixture blob and tag decode lint

Inline percent-escape hex parsing in the tag URI decoder to satisfy source linting and recommit the yaml-test-suite release archive as binary bytes so the pinned SHA-256 matches in CI and module-local conformance runs.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

src/functions/private/ConvertFrom-YamlTagUriEscape.ps1

@@ -16,14 +16,6 @@ function ConvertFrom-YamlTagUriEscape {
         [string] $Token
     )
 
-    function Get-YamlHexNibble {
-        param ([char] $Character)
-        if ($Character -notmatch '^[0-9A-Fa-f]$') {
-            return -1
-        }
-        [System.Convert]::ToInt32([string] $Character, 16)
-    }
-
     $builder = [System.Text.StringBuilder]::new()
     $escapedBytes = [System.Collections.Generic.List[byte]]::new()
     $utf8 = [System.Text.UTF8Encoding]::new($false, $true)
@@ -50,14 +42,13 @@ function ConvertFrom-YamlTagUriEscape {
                     "The tag token '$Token' contains a malformed percent escape."
                 ))
         }
-        $high = Get-YamlHexNibble -Character $Text[$index + 1]
-        $low = Get-YamlHexNibble -Character $Text[$index + 2]
-        if ($high -lt 0 -or $low -lt 0) {
+        $pair = '{0}{1}' -f $Text[$index + 1], $Text[$index + 2]
+        if ($pair -cnotmatch '^[0-9A-Fa-f]{2}$') {
             throw (New-YamlException -Start $Mark -End $Mark -ErrorId 'YamlInvalidTag' -Message (
                     "The tag token '$Token' contains a malformed percent escape."
                 ))
         }
-        $escapedBytes.Add([byte](($high * 16) + $low))
+        $escapedBytes.Add([System.Convert]::ToByte($pair, 16))
         $index += 2
     }