chore(release): bump Sistent to 0.20.0

Minor bump (0.19.1 → 0.20.0). Treated as a breaking change for external
consumers that read these snake_case keys off typed Sistent responses —
they must move to the canonical camelCase field names shipped in this PR.

Signed-off-by: Lee Calcote <lee.calcote@layer5.io>

Author: leecalcote

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@sistent/sistent",
-  "version": "0.19.1",
+  "version": "0.20.0",
   "description": "Reusable React Components and SVG Icons library",
   "repository": {
     "type": "git",