Update changelog for 2.0.0-1 release

debian/changelog

+php-http-interop-http-factory-tests (2.0.0-1) experimental; urgency=medium
+
+  * Upload to experimental
+
+  [ Martijn van der Ven ]
+  * Add cursor test for createStreamFromFile
+  * Add cursor test for createStreamFromResource
+  * Add (incomplete) cursor test for createStream
+
+  [ smiley ]
+  * support PHPUnit 10
+
+  [ David Prévot ]
+  * Update standards version to 4.6.2, no changes needed.
+
+ -- David Prévot <taffit@debian.org>  Thu, 26 Oct 2023 13:21:13 +0200
+
 php-http-interop-http-factory-tests (0.9.0-3) unstable; urgency=medium
 
   * Add build-dependency needed for phpabtpl(1) (Closes: #1015091)