Fix high severity rollup vulnerability (GHSA-mw96-cpmx-2vgc)

Add rollup override to force >=4.59.0 for all transitive dependencies,
resolving the arbitrary file write via path traversal vulnerability.

Author: ryukzak

bun.lock

@@ -69,6 +69,7 @@
     "@atomic-ehr/fhirschema": "^0.0.8",
     "mustache": "^4.2.0",
     "picocolors": "^1.1.1",
+    "rollup": "^4.59.0",
     "tinyglobby": "^0.2.15",
     "yaml": "^2.8.2",
     "yargs": "^18.0.0"
@@ -84,6 +85,7 @@
     "typescript": "^5.9.3"
   },
   "overrides": {
-    "minimatch": ">=10.2.1"
+    "minimatch": ">=10.2.1",
+    "rollup": ">=4.59.0"
   }
 }