chore(deps): bump express from 5.1.0 to 5.2.1 in /examples/servers/dictionary #1910

Job	Run time
typescript / Check Typescript chatbot	36s
typescript / Check Typescript library	41s
typescript / Check Typescript E2E tests	32s
python / Check Python chatbot	13s
python / Check Python E2E tests	14s
python / Check Python library	54s
cdk / Check Typescript-based Cognito stack	18s
cdk / Check Typescript-based Weather Alerts Server	1m 23s
cdk / Check Python-based Zen Server	53s
cdk / Check Python-based Dad Jokes Server	2m 5s
cdk / Check Typescript-based Cat Facts Server	1m 36s
cdk / Check Typescript-based Dictionary Server	1m 37s
cdk / Check Python-based MCP Doc Server	1m 50s
cdk / Check Python-based Book Search Server	2m 20s
cdk / Check Typescript-based Dog Facts Server	1m 36s
cdk / Check Python-based Time Server	2m 12s
	19m 0s

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