fix(shell-bson): allow bson 7.x as a peer dependency

The interface is largely unchanged from 6.x, so consumers can use
7.x as a plug-in replacement for 6.x here already.

Author: addaleax

packages/shell-bson/package.json

@@ -40,7 +40,7 @@
     "@mongosh/errors": "^2.4.4"
   },
   "peerDependencies": {
-    "bson": "^6.10.4"
+    "bson": "^6.10.4 || ^7.0.0"
   },
   "devDependencies": {
     "@mongodb-js/eslint-config-mongosh": "^1.0.0",