v0.38.5

DynamicPPL v0.38.5

Diff since v0.38.4

Improve performance of VarNamedVector, mostly by changing how it handles contiguification.

Merged pull requests:

• VNV type stability improvements and tests (#1102) (@mhauru)
• Bump gha versions (#1109) (@penelopeysm)
• Bump patch version to 0.38.5 (#1111) (@mhauru)