[MISC] Switch to Ruff #966

Job	Run time
Check libraries	35s
Check libraries	35s
Lint	24s
Lint	24s
Unit tests	31s
Unit tests	31s
Build charms / Get workflow version / Get workflow version	4s
Build charms / Get workflow version / Get workflow version	4s
Build charms / Collect charms	16s
Build charms / Collect charms	16s
Build charms / Build pgbouncer-k8s charm \| 22.04	18m 29s
Build charms / Build pgbouncer-k8s charm \| 22.04	18m 29s
Build charms / Build application charm \| 22.04	1m 37s
Build charms / Build application charm \| 22.04	1m 37s
backend-integration \| 2.9.44	11s
backend-integration \| 2.9.44	11m 32s
backend-integration \| 3.1.5	14s
backend-integration \| 3.1.5	11m 34s
client-relation-integration \| 2.9.44	15s
client-relation-integration \| 2.9.44	11m 33s
client-relation-integration \| 3.1.5	1s
client-relation-integration \| 3.1.5	11m 32s
scaling-integration \| 2.9.44	1s
scaling-integration \| 2.9.44	11m 34s
scaling-integration \| 3.1.5	1s
scaling-integration \| 3.1.5	11m 33s
tls-integration \| 2.9.44	1s
tls-integration \| 2.9.44	1s
tls-integration \| 3.1.5	1s
tls-integration \| 3.1.5	1s
standalone-integration \| 2.9.44	1s
standalone-integration \| 2.9.44	1s
standalone-integration \| 3.1.5	1s
standalone-integration \| 3.1.5	1s
legacy-client-relation-integration \| 2.9.44	1s
legacy-client-relation-integration \| 2.9.44	1s
legacy-client-relation-integration \| 3.1.5	1s
legacy-client-relation-integration \| 3.1.5	1s
	1h 54m 5s

Provide feedback