chore: merge branch 'fix_is_einfra_assured' into 'main'

fix:  Potential Undefined array key in IsEinfrAssured

See merge request perun-proxy-aai/simplesamlphp/simplesamlphp-module-cesnet!62

lib/Auth/Process/IsEinfraAssured.php

@@ -74,9 +74,9 @@ class IsEinfraAssured extends ProcessingFilter
     public function process(&$request)
     {
         $timestamp = 0;
-        if (isset($request['Attributes'][$this->sessionEligibilitiesAttr][$this->eligibilityKey])) {
+        if (!empty($request['Attributes'][$this->sessionEligibilitiesAttr][$this->eligibilityKey])) {
             $timestamp = $request['Attributes'][$this->sessionEligibilitiesAttr][$this->eligibilityKey];
-        } elseif (isset($request['Attributes'][$this->userEligibilitiesAttr][$this->eligibilityKey])) {
+        } elseif (!empty($request['Attributes'][$this->userEligibilitiesAttr][$this->eligibilityKey])) {
             $timestamp = $request['Attributes'][$this->userEligibilitiesAttr][$this->eligibilityKey];
         }