build(deps): bump eclipse-temurin base image to java 21 (#1001) #1265

Job	Run time
verify / verify-helm-docs	8s
verify / verify-license-headers	2s
verify / verify-formatting	3m 0s
deployment-test / secret-presence	1s
deployment-test / test-prepare	4s
upgradeability-test / test-prepare	7s
verify / verify-dependencies / Review-Allowed-Licenses	0s
verify / verify-dependencies / Dash-Verify-Licenses	1m 27s
deployment-test / test-in-memory	5m 39s
deployment-test / test-hashicorp-postgres	6m 9s
deployment-test / test-azure-vault-postgres	0s
upgradeability-test / test-upgradeability	7m 10s
verify / unit-tests	3m 23s
verify / api-tests	2m 52s
verify / end-to-end-tests	10m 9s
verify / integration-tests	2m 30s
verify / dataplane-tests	1m 46s
verify / miw-integration-tests	2m 36s
verify / postgres-tests	1m 45s
summary	0s
	48m 48s

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