Add `4.0.0-beta.1` pre-release #752

Job	Run time
Generate Jobs	44s
4.0.0-beta.1, 4.0.0-beta.1-management	9m 16s
4.0.0-beta.1-alpine, 4.0.0-beta.1-management-alpine	9m 14s
3.13.4, 3.13.4-management	8m 21s
3.13.4-alpine, 3.13.4-management-alpine	8m 44s
3.12.14, 3.12.14-management	8m 0s
3.12.14-alpine, 3.12.14-management-alpine	8m 16s
4.0.0-beta.1-alpine, 4.0.0-beta.1-management-alpine (i386)	9m 34s
3.13.4-alpine, 3.13.4-management-alpine (i386)	8m 58s
3.12.14-alpine, 3.12.14-management-alpine (i386)	9m 3s
	1h 20m 10s

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