v2.12.0
tree: update for stable v3.3.0 and new v3.4.0-experimental
config/v3_3_exp: pointerify ClevisCustom Config and Pin
*: bump import path
config/*: refactor config.go's Parse() to use GetConfigVersion
config/*: return report from previous parser when chaining
*: fix gosimple warnings
config/v3_4_experimental: adapt for experimental