swh-indexer: update to 2.7.3

Ref. infra/sysadm-environment#4658

apps/swh-indexer/requirements-frozen.txt

 aiohttp==3.8.3
 aiohttp-utils==3.1.1
-aiosignal==1.2.0
+aiosignal==1.3.1
 amqp==5.1.1
 async-timeout==4.0.2
-asynctest==0.13.0
 attrs==22.1.0
 attrs-strict==1.0.0
 billiard==3.6.4.0
 blinker==1.5
-cached-property==1.5.2
 cachetools==5.2.0
 cassandra-driver==3.25.0
 celery==5.2.7
@@ -21,10 +19,10 @@ click-plugins==1.1.1
 click-repl==0.2.0
 confluent-kafka==1.9.2
 Deprecated==1.2.13
-exceptiongroup==1.0.0
+exceptiongroup==1.0.1
 Flask==2.2.2
 frozendict==2.3.4
-frozenlist==1.3.1
+frozenlist==1.3.3
 geomet==0.2.1.post1
 gunicorn==20.1.0
 humanize==4.4.0
@@ -47,8 +45,8 @@ packaging==21.3
 pika==1.3.1
 pluggy==1.0.0
 port-for==0.6.2
-prompt-toolkit==3.0.31
-psutil==5.9.3
+prompt-toolkit==3.0.32
+psutil==5.9.4
 psycopg2==2.9.5
 pycparser==2.21
 PyLD==2.0.3
@@ -58,7 +56,7 @@ pytest-postgresql==3.1.3
 python-dateutil==2.8.2
 python-magic==0.4.27
 python-mimeparse==1.6.0
-pytz==2022.5
+pytz==2022.6
 PyYAML==6.0
 rdflib==6.2.0
 redis==4.3.4
@@ -68,7 +66,7 @@ six==1.16.0
 sortedcontainers==2.4.0
 swh.core==2.17.0
 swh.counters==0.9.1
-swh.indexer==2.7.2
+swh.indexer==2.7.3
 swh.journal==1.2.1
 swh.model==6.6.0
 swh.objstorage==2.0.1