Update Polygon Amoy bootnodes and maxpeers

- Replace outdated bootnodes (34.89.39.114, 35.197.249.21) with official ones from Polygon docs
- New bootnodes: 34.89.255.109, 34.185.137.160, 34.89.119.250, 34.89.40.235
- Increase maxpeers from 50 to 500 per Polygon docs recommendations
- Affects: Bor and all Erigon3 variants (archive, minimal, pruned)

Reference: https://docs.polygon.technology/pos/reference/seed-and-bootnodes/

Co-Authored-By: Claude Agent <claude@stakesquid.eu>

polygon/bor/polygon-amoy-bor-pruned-pebble-path.yml

@@ -65,7 +65,7 @@ services:
       - --http.api=eth,net,web3,txpool,debug,admin,bor
       - --http.port=8545
       - --http.vhosts=*
-      - --maxpeers=50
+      - --maxpeers=500
       - --metrics
       - --metrics.prometheus-addr=0.0.0.0:6060
       - --nat=extip:${IP}