Require minimum bosh release version 261 for sha2
[finishes
Deploying diego-release requires the following minimum versions of BOSH dependencies:
-- BOSH release v255.4+ (Director version 1.3213.0).
+- BOSH release v261+.
- BOSH stemcell 3263+.
These BOSH versions ensure the following BOSH lifecycle management operations occur on the Diego jobs:
