Bump ruby/setup-ruby from 1.187.0 to 1.188.0 #9640

Job	Run time
Caching (3.8)	26s
Caching (3.9)	7s
Caching (3.10)	8s
Caching (3.11)	8s
Caching (3.12)	7s
Linting (3.8)	3m 27s
Linting (3.9)	3m 25s
Linting (3.10)	3m 17s
Linting (3.11)	3m 10s
Linting (3.12)	3m 20s
terraformexamplestest / test_create_only (ec2)	1m 35s
terraformexamplestest / test (acm)	4m 20s
dotnettest / test	1m 25s
javatest / test	1m 3s
rubytest / test (3.3)	57s
terraformexamplestest / test (awslambda)	3m 46s
terraformexamplestest / test (cloudfront)	3m 51s
test / test (3.8)	16m 9s
terraformexamplestest / test (elb)	3m 35s
testserver / test (3.8)	15m 39s
test / test (3.9)	16m 20s
terraformexamplestest / test (iam)	2m 47s
test / test (3.10)	15m 6s
testserver / test (3.9)	16m 12s
terraformexamplestest / test (rds)	3m 30s
test / test (3.11)	14m 55s
testserver / test (3.10)	15m 18s
terraformexamplestest / test (route53)	4m 11s
test / test (3.12)	15m 57s
terraformexamplestest / test (sqs)	3m 28s
testserver / test (3.11)	15m 19s
testserver / test (3.12)	15m 54s
testproxy / test (ubuntu-latest, 3.10)	4m 13s
testproxy / test (ubuntu-latest, 3.11)	3m 58s
testproxy / test (ubuntu-latest, 3.12)	4m 3s
testproxy / test (windows-latest, 3.10)	4m 55s
testproxy / test (windows-latest, 3.11)	4m 43s
testproxy / test (windows-latest, 3.12)	4m 39s
Release	0s
	3h 55m 23s

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