Bump dependencies

Author: tvdijen

composer.json

@@ -31,12 +31,12 @@
         "ext-dom": "*",
         "ext-spl": "*",
 
-        "simplesamlphp/assert": "^0.7.2"
+        "simplesamlphp/assert": "^0.8.0"
     },
     "require-dev": {
         "ext-xmlreader": "*",
 
-        "simplesamlphp/simplesamlphp-test-framework": "^1.2.1"
+        "simplesamlphp/simplesamlphp-test-framework": "^1.3.1"
     },
     "support": {
         "issues": "https://github.com/simplesamlphp/xml-common/issues",