Switch lib pirates to published version

requirements/base.in

@@ -3,4 +3,4 @@ wagtailmenus
 django-environ
 django-extensions
 psycopg2-binary
-git+https://gitlab.pirati.cz/to/pirates@v0.3.1
+pirates<=0.4

requirements/base.txt

@@ -25,7 +25,7 @@ josepy==1.3.0             # via mozilla-django-oidc
 l18n==2018.5              # via wagtail
 mozilla-django-oidc==1.2.3  # via pirates
 pillow==7.1.2             # via wagtail
-git+https://gitlab.pirati.cz/to/pirates@v0.3.1  # via -r base.in
+pirates==0.3.1            # via -r base.in
 psycopg2-binary==2.8.5    # via -r base.in
 pyasn1-modules==0.2.8     # via python-ldap
 pyasn1==0.4.8             # via pyasn1-modules, python-ldap