Update dependency FluentValidation to v11.9.0 #295

Job	Run time
people-service-dotnet-scan	34s
reference-data-node-scan	59s
account-service-gradle-scan	1m 9s
trade-feed-node-scan	35s
trade-processor-dockerfile-scan	1m 40s
database-gradle-scan	44s
web-front-end/angular-node-scan	1m 2s
database-dockerfile-scan	1m 23s
position-service-gradle-scan	1m 10s
web-front-end/proxy-node-scan	26s
account-service-dockerfile-scan	2m 2s
trade-processor-gradle-scan	1m 22s
web-front-end/react-node-scan	1m 32s
trade-feed-dockerfile-scan	1m 42s
trade-service-gradle-scan	1m 30s
position-service-dockerfile-scan	1m 44s
trade-service-dockerfile-scan	1m 58s
web-front-end/angular-dockerfile-scan	2m 47s
people-service-dockerfile-scan	1m 24s
reference-data-dockerfile-scan	3m 42s
	29m 25s

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