Update Pretix Extended API version to 0.1.14 (#4265)

Author: marcoacierno

pretix/Dockerfile

@@ -6,7 +6,7 @@ COPY ./settings.py /pretix/src/production_settings.py
 
 RUN pip install boto3==1.35.14 \
     django-storages==1.14.4 \
-    pretix-plugin-extended-api==0.1.12 \
+    pretix-plugin-extended-api==0.1.14 \
     pretix-plugin-attendance-certificate==0.1.11 \
     pretix-fattura-elettronica==0.2.15