DEP Increase minimum version of silverstripe/framework #1086

Job	Run time
CI / Generate matrix	20s
CI / Context	1s
CI / 8.1 prf-low mysql57 phpunit all	2m 36s
CI / Check governance	0s
CI / 8.2 mariadb phpunit all	2m 54s
CI / 8.3 mysql80 phpunit all	3m 12s
CI / 8.1 mysql57 phplinting	2m 9s
CI / 8.1 mysql57 endtoend root job1	8m 15s
CI / 8.3 mysql80 endtoend root job1	9m 53s
CI / 8.1 mysql57 endtoend root job2	6m 34s
CI / 8.3 mysql80 endtoend root job2	7m 2s
CI / 8.1 mysql57 endtoend root job3	9m 35s
CI / 8.3 mysql80 endtoend root job3	9m 12s
CI / 8.1 mysql57 endtoend root job4	9m 14s
CI / 8.3 mysql80 endtoend root job4	9m 54s
CI / 8.1 mysql57 endtoend root job5	6m 29s
CI / 8.3 mysql80 endtoend root job5	6m 17s
CI / 8.1 mysql57 endtoend root job6	7m 44s
CI / 8.3 mysql80 endtoend root job6	9m 26s
CI / 8.1 mysql57 endtoend root job7	10m 55s
CI / 8.3 mysql80 endtoend root job7	11m 3s
CI / 8.1 mysql57 js	4m 8s
CI / 8.1 mysql57 doclinting	2m 36s
CI / Dispatch tag patch release	0s
	2h 19m 29s

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