fix(datahub-frontend) Give permission for start.sh so it can run (#8594) #21936

Job	Run time
event-file	2s
quickstart-compose-validation	20s
build (./gradlew build -x :metadata-ingestion:build -x :metadata-ingestion:check -x docs-website:...	13m 19s
build (./gradlew build -x :metadata-ingestion:build -x :metadata-ingestion:check -x docs-website:...	15m 9s
build (./gradlew :datahub-frontend:build :datahub-web-react:build --parallel, UTC)	18m 7s
build (./gradlew :datahub-frontend:build :datahub-web-react:build --parallel, America/New_York)	22m 25s
build (./gradlew :metadata-ingestion-modules:airflow-plugin:build --parallel, UTC)	8m 4s
build (./gradlew :metadata-ingestion-modules:airflow-plugin:build --parallel, America/New_York)	9m 0s
	1h 26m 26s

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