Fixed address unicode error when running igrate_storage_facilities_to_dx

[Lunga001]

Description of the issue/feature this PR addresses

Linked issue: https://github.com/senaite/senaite.storage/issues/

Current behavior before PR

Running the upgrade script 2700 renders the ff error

We’re sorry, but there seems to be an error…
UnicodeDecodeError
Traceback (innermost last):
  Module ZPublisher.WSGIPublisher, line 176, in transaction_pubevents
  Module ZPublisher.WSGIPublisher, line 385, in publish_module
  Module ZPublisher.WSGIPublisher, line 288, in publish
  Module ZPublisher.mapply, line 85, in mapply
  Module ZPublisher.WSGIPublisher, line 63, in call_object
  Module Products.CMFPlone.controlpanel.browser.quickinstaller, line 666, in __call__
  Module Products.CMFPlone.controlpanel.browser.quickinstaller, line 399, in upgrade_product
  Module Products.GenericSetup.tool, line 1202, in upgradeProfile
  Module Products.GenericSetup.upgrade, line 185, in doStep
  Module senaite.storage.upgrade.v02_07_000, line 123, in migrate_storage_facilities_to_dx
  Module senaite.storage.upgrade.v02_07_000, line 185, in migrate_storage_facility_to_dx
  Module senaite.core.migration.migrator, line 131, in copy_id
  Module plone.folder.ordered, line 202, in manage_renameObject
  Module OFS.CopySupport, line 403, in manage_renameObject
  Module zope.event, line 33, in notify
  Module zope.component.event, line 27, in dispatch
  Module zope.component._api, line 134, in subscribers
  Module zope.interface.registry, line 448, in subscribers
  Module zope.interface.adapter, line 899, in subscribers
  Module zope.component.event, line 36, in objectEventNotify
  Module zope.component._api, line 134, in subscribers
  Module zope.interface.registry, line 448, in subscribers
  Module zope.interface.adapter, line 899, in subscribers
  Module plone.app.discussion.comment, line 309, in notify_content_object_moved
  Module Products.CMFPlone.CatalogTool, line 440, in searchResults
  Module Products.CMFCore.indexing, line 97, in processQueue
  Module Products.CMFCore.indexing, line 227, in process
  Module senaite.core.catalog.catalog_multiplex_processor, line 105, in reindex
  Module Products.CMFCore.CatalogTool, line 368, in _reindexObject
  Module Products.CMFPlone.CatalogTool, line 362, in catalog_object
  Module Products.ZCatalog.ZCatalog, line 508, in catalog_object
  Module Products.ZCatalog.Catalog, line 341, in catalogObject
  Module Products.ZCatalog.Catalog, line 292, in updateMetadata
  Module Products.ZCatalog.Catalog, line 427, in recordify
  Module senaite.storage.content.storage_facility, line 131, in Description
  Module string, line 207, in safe_substitute
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 0: ordinal not in range(128)

Desired behavior after PR is merged

Upgrade script to run successfully

--
I confirm I have tested this PR thoroughly and coded it according to PEP8
and Plone's Python styleguide standards.

[xispa]

Thanks @Lunga001 !