keep-the-why: bump to 0.20.2

source.ref v0.20.2, with source.sha for an immutable pin as requested on
the 0.20.1 bump; marketplace.json regenerated.

.github/plugin/marketplace.json

@@ -1315,7 +1315,7 @@
     {
       "name": "keep-the-why",
       "description": "Preserves or recovers the reasoning behind a codebase — architectural decisions, rejected alternatives, workarounds, incident learnings, operational constraints, and historical context the code itself cannot explain.",
-      "version": "0.20.1",
+      "version": "0.20.2",
       "author": {
         "name": "Oliver Zehentleitner",
         "url": "https://github.com/oliver-zehentleitner"
@@ -1334,7 +1334,8 @@
       "source": {
         "source": "github",
         "repo": "oliver-zehentleitner/keep-the-why",
-        "ref": "v0.20.1"
+        "ref": "v0.20.2",
+        "sha": "4c14d0d170789d54af00307bdbb5f38a3312d3a6"
       }
     },
     {