Update code for breaking change in werkzeug (backport #1354) #681

Job	Run time
doc (docs)	1m 47s
check (build)	43s
doc (docs-gnocchi-web)	1m 40s
test (py39, postgresql-file-upgrade-from-4.4)	2m 36s
check (pep8)	49s
test (py39, mysql-file)	2m 58s
test (py39, mysql-file-sqlalchemy14)	2m 53s
test (py39, mysql-swift)	3m 39s
test (py39, mysql-s3)	3m 56s
test (py39, postgresql-file)	2m 54s
test (py39, postgresql-file-sqlalchemy14)	2m 51s
test (py39, postgresql-swift)	3m 35s
test (py39, postgresql-s3)	3m 31s
test (py311, postgresql-file-upgrade-from-4.4)	2m 48s
test (py311, mysql-file)	3m 2s
test (py311, mysql-file-sqlalchemy14)	2m 48s
test (py311, mysql-swift)	3m 50s
test (py311, mysql-s3)	3m 41s
test (py311, postgresql-file)	4m 8s
test (py311, postgresql-file-sqlalchemy14)	2m 47s
test (py311, postgresql-swift)	3m 30s
test (py311, postgresql-s3)	3m 42s
	1h 4m 8s

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