update meta files for release

Author: jcupitt

org.libvips.nip4.json

@@ -375,7 +375,7 @@
                 {
                     "type" : "git",
                     "url" : "https://github.com/libvips/libvips.git",
-                    "tag" : "v8.17.0"
+                    "tag" : "v8.18.0-test1"
                 }
             ]
         },
@@ -407,7 +407,7 @@
                 {
                     "type" : "git",
                     "url" : "https://github.com/jcupitt/nip4.git",
-                    "tag" : "v9.0.10"
+                    "tag" : "v9.0.11"
                 }
             ]
         }

org.libvips.nip4.metainfo.xml

@@ -58,6 +58,18 @@ from the command-line and without a GUI.
 
   <releases>
 
+    <release version="9.0.11" date="2025-07-21">
+      <description>
+        <p>
+
+		This version has a rewritten tilecache which should be o
+		dramatically faster in many cases. Flicker on updates should
+		also be gone. Plus many small fixes, see the CHANGELOG.
+
+        </p>
+      </description>
+    </release>
+
     <release version="9.0.10" date="2025-06-22">
       <description>
         <p>