revert: keep agpl in info.xml (Nextcloud app store requirement)

The app store only recognises agpl/apache/mit — not eupl.
Source files use SPDX EUPL-1.2 headers (the actual licence).
info.xml uses agpl for store compatibility only.

Author: rubenvdlinde

appinfo/info.xml

@@ -35,7 +35,7 @@ Vrij en open source onder de EUPL-1.2-licentie.
 **Ondersteuning:** Voor ondersteuning, neem contact op via support@conduction.nl.
     ]]></description>
     <version>0.1.0</version>
-    <licence>eupl</licence>
+    <licence>agpl</licence>
     <author mail="info@conduction.nl" homepage="https://www.conduction.nl/">Conduction</author>
     <namespace>AppTemplate</namespace>
     <documentation>