new DOIs for OJS "Medienimpulse", see #30728

metadata/mi/mi-02-22-21.xml

metadata/mi/mi-02-22-22.xml

metadata/mi/mi-02-22-23.xml

metadata/mi/mi-03-22-01.xml

metadata/mi/mi-03-22-02.xml

metadata/mi/mi-03-22-03.xml

metadata/mi/mi-03-22-04.xml

metadata/mi/mi-03-22-05.xml

metadata/mi/mi-03-22-06.xml

metadata/mi/mi-03-22-07.xml

metadata/mi/mi-03-22-08.xml

metadata/mi/mi-03-22-09.xml

metadata/mi/mi-03-22-10.xml

metadata/mi/mi-03-22-11.xml

metadata/mi/mi-03-22-12.xml

metadata/mi/mi-03-22-13.xml

metadata/mi/mi-03-22-14.xml

metadata/mi/mi-03-22-15.xml

metadata/mi/mi-03-22-16.xml

metadata/mi/mi-03-22-17.xml