Silence `utcnow` deprecation warnings from `botocore` #11141

Job	Run time
Caching (3.8)	14s
Caching (3.9)	11s
Caching (3.10)	11s
Caching (3.11)	8s
Caching (3.12)	7s
Caching (3.13)	19s
Linting (3.8)	3m 48s
Linting (3.9)	3m 57s
Linting (3.10)	3m 20s
Linting (3.11)	2m 54s
Linting (3.12)	3m 9s
Linting (3.13)	3m 0s
dotnettest / test	1m 43s
javatest / test	1m 27s
jstest / test	1m 7s
rubytest / test (3.3)	1m 1s
terraformexamplestest / Find Jobs	4s
test / test (3.8)	18m 15s
testproxy / test (ubuntu-latest, 3.10)	4m 25s
test / test (3.9)	17m 58s
testproxy / test (ubuntu-latest, 3.11)	4m 8s
testserver / test (3.8)	18m 8s
test / test (3.10)	17m 46s
testproxy / test (ubuntu-latest, 3.12)	4m 24s
testserver / test (3.9)	19m 53s
test / test (3.11)	16m 17s
testproxy / test (windows-latest, 3.10)	5m 21s
testserver / test (3.10)	16m 33s
test / test (3.12)	18m 47s
testproxy / test (windows-latest, 3.11)	5m 18s
testserver / test (3.11)	16m 44s
test / test (3.13)	16m 48s
testproxy / test (windows-latest, 3.12)	5m 35s
testserver / test (3.12)	18m 22s
terraformexamplestest / test (acm)	4m 35s
terraformexamplestest / test (autoscaling)	2m 56s
terraformexamplestest / test (awslambda)	3m 57s
terraformexamplestest / test (cloudfront)	4m 1s
terraformexamplestest / test (codebuild)	2m 45s
terraformexamplestest / test (ds)	3m 54s
terraformexamplestest / test (ec2)	3m 22s
terraformexamplestest / test (elb)	3m 51s
terraformexamplestest / test (iam)	2m 45s
terraformexamplestest / test (rds)	3m 56s
terraformexamplestest / test (route53)	4m 14s
terraformexamplestest / test (sqs)	3m 41s
terraformexamplestest / test (wafv2)	3m 39s
	4h 58m 58s

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