chore(examples): bump starter integrations to @CopilotKit 1.59.5 (CopilotKit#5273)

## Summary
- Bumps all starter integration examples under `examples/integrations/*`
to the latest published `@copilotkit` packages: `react-core`,
`react-ui`, `runtime`, `runtime-client-gql` (where present), `sdk-js`,
and the peer `a2ui-renderer` → **1.59.5**.
- Real prior pins were a mix of 1.59.3 / 1.59.1 / 1.56.5; all unified to
1.59.5.
- Regenerated each affected `package-lock.json` (starters use npm
per-app lockfiles and are intentionally excluded from the root pnpm
workspace — `pnpm-lock.yaml` untouched).
- Representative starter (`adk`) `next build` compiles successfully
against 1.59.5.

## Test plan
- [ ] CI build-checks green for the touched starters
- [ ] Starter dashboard greens on staging after image rebuild (chat rung
also depends on the aimock greeting fixture landing)

Author: jpr5

examples/integrations/a2a-a2ui/package-lock.json

@@ -19,9 +19,9 @@
     "@ag-ui/a2a": "0.00.6",
     "@ag-ui/client": "0.0.53",
     "@ag-ui/core": "0.0.53",
-    "@copilotkit/a2ui-renderer": "1.59.3",
-    "@copilotkit/react-core": "1.59.3",
-    "@copilotkit/runtime": "1.59.3",
+    "@copilotkit/a2ui-renderer": "1.59.5",
+    "@copilotkit/react-core": "1.59.5",
+    "@copilotkit/runtime": "1.59.5",
     "hono": "^4.6.18",
     "lucide-react": "^0.577.0",
     "next": "^16.0.10",