upgrade github actions to v3

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
     timeout-minutes: 60
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install build dependencies (Linux i386)
         if: runner.os == 'Linux' && matrix.target.cpu == 'i386'
@@ -79,7 +79,7 @@ jobs:
       - name: Restore rocksdb from cache (Macos)
         if: runner.os != 'Windows'
         id: rocksdb-cache
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         with:
           path: rocks-db-cache-${{ matrix.target.cpu }}
           key: 'rocksdb-v1-${{ matrix.target.os }}-${{ matrix.target.cpu }}'
@@ -151,7 +151,7 @@ jobs:
       - name: Restore Nim DLLs dependencies (Windows) from cache
         if: runner.os == 'Windows'
         id: windows-dlls-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: external/dlls-${{ matrix.target.cpu }}
           key: 'dlls-${{ matrix.target.cpu }}'

eth/p2p.nim

@@ -8,7 +8,7 @@
 {.push raises: [Defect].}
 
 import
-  std/[tables, algorithm, random, typetraits, strutils],
+  std/[tables, algorithm, random, typetraits, strutils, net],
   chronos, chronos/timer, chronicles,
   ./keys, ./p2p/private/p2p_types,
   ./p2p/[kademlia, discovery, enode, peer_pool, rlpx]

eth/p2p/discovery.nim

@@ -8,7 +8,7 @@
 {.push raises: [Defect].}
 
 import
-  std/times,
+  std/[times, net],
   chronos, stint, nimcrypto/keccak, chronicles,
   stew/[objects, results],
   ".."/[keys, rlp],