[ci][hotfix] Enable parallel execution for pipeline-e2e tests #2183

Job	Run time
License Check	5m 54s
Source Unit Tests / test (11, generic, oracle, sqlserver)	12m 17s
Source Unit Tests / test (11, generic, mysql-source)	12m 18s
Pipeline Unit Tests / test (11, generic, doris, elasticsearch, fluss, hudi, iceberg, kafka, maxcompute, mysql-pipeline,...	12m 19s
Common Unit Tests / test (11, generic, core)	12m 19s
Source Unit Tests / test (11, generic, postgres-source, oceanbase-source, tidb, vitess)	12m 9s
Common Unit Tests 2.x / test (11, 2.2.0, core_2.x)	11m 50s
Pipeline E2E Tests 2.x (4-Parallelism) / test (11, 2.2.0, pipeline_e2e)	11m 0s
Source E2E Tests / test (11, 1.19.3, source_e2e)	11m 44s
Source E2E Tests / test (11, 1.20.3, source_e2e)	11m 49s
Pipeline E2E Tests 2.x (1-Parallelism) / test (11, 2.2.0, pipeline_e2e)	10m 14s
Source Unit Tests / test (11, generic, db2, mongodb)	11m 49s
Pipeline E2E Tests (4-Parallelism) / test (11, 1.19.3, pipeline_e2e)	11m 49s
Pipeline E2E Tests (1-Parallelism) / test (11, 1.19.3, pipeline_e2e)	11m 44s
Pipeline E2E Tests (1-Parallelism) / test (11, 1.20.3, pipeline_e2e)	11m 48s
Pipeline E2E Tests (4-Parallelism) / test (11, 1.20.3, pipeline_e2e)	11m 49s
	3h 2m 52s

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