fix: bump <pl:version> to 1.2

PLUGIN-INF/metadata_SLUBMatroskaFFV1FormatValidationPlugin.xml

@@ -49,7 +49,7 @@
   </pl:initParameters>
   <pl:description>SLUB Matroska/FFV1 validation Plugin, using MediaConch to validate
     FFV1/Matroska-files</pl:description>
-  <pl:version>1.1</pl:version>
+  <pl:version>1.2</pl:version>
   <pl:materialType>DIGITAL</pl:materialType>
   <pl:module>Preservation</pl:module>
   <pl:generalType>TASK</pl:generalType>