fix deprecations

Author: Dmytro Vyshnevskyi

src/Core/phpunit.xml.dist

@@ -1,17 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
-         backupGlobals="false"
-         colors="true"
-         bootstrap="vendor/autoload.php"
-         failOnRisky="true"
-         failOnWarning="true"
->
-  <coverage>
-    <include>
-      <directory>./src</directory>
-    </include>
-  </coverage>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd" backupGlobals="false" colors="true" bootstrap="vendor/autoload.php" failOnRisky="true" failOnWarning="true">
   <php>
     <ini name="error_reporting" value="-1"/>
   </php>
@@ -20,4 +8,9 @@
       <directory>./tests/</directory>
     </testsuite>
   </testsuites>
+  <source>
+    <include>
+      <directory>./src</directory>
+    </include>
+  </source>
 </phpunit>

src/Core/tests/Unit/Signer/SignerV4Test.php

@@ -78,7 +78,7 @@ public function testSignsRequests($rawRequest, $rawExpected)
         self::assertEquals($expected, $request);
     }
 
-    public function provideRequests()
+    public static function provideRequests()
     {
         return [
             // POST headers should be signed.
@@ -158,7 +158,7 @@ public function testSignsRequestsWithArrayInQueryParams($rawRequestWithoutQuery,
         self::assertEquals($expected, $request);
     }
 
-    private function provideRequestsWithQueryParams()
+    public static function provideRequestsWithQueryParams()
     {
         return [
             // GET Case with array in query params