build(deps): bump actions/upload-artifact from 3 to 4 #780

Job	Run time
build / build	4s
run (oidcc-client-basic-certification-test-plan)	1m 37s
run (client_secret_basic, oidcc-client-test-plan)	1m 37s
run (client_secret_post, oidcc-client-test-plan)	1m 37s
run (request_object, oidcc-client-test-plan)	1m 34s
run (private_key_jwt, oidcc-client-test-plan)	1m 32s
run (none, oidcc-client-test-plan)	1m 34s
run (RS256, oidcc-client-test-plan, request_object, private_key_jwt)	1m 46s
run (RS384, oidcc-client-test-plan, request_object, private_key_jwt)	1m 46s
run (RS512, oidcc-client-test-plan, request_object, private_key_jwt)	1m 42s
run (PS256, oidcc-client-test-plan, request_object, private_key_jwt)	1m 34s
run (PS384, oidcc-client-test-plan, request_object, private_key_jwt)	2m 1s
run (PS512, oidcc-client-test-plan, request_object, private_key_jwt)	1m 31s
run (ES256, oidcc-client-test-plan, request_object, private_key_jwt)	1m 44s
run (EdDSA, oidcc-client-test-plan, request_object, private_key_jwt)	1m 42s
run (fapi2-security-profile-id2-client-test-plan)	2m 23s
run (fapi2-security-profile-id2-client-test-plan, plain_oauth)	1m 17s
run (fapi2-message-signing-id1-client-test-plan)	2m 54s
run (fapi2-message-signing-id1-client-test-plan, plain_oauth)	1m 55s
	31m 50s

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