upgrade github actions

.github/workflows/code-coverage.yaml

@@ -1,17 +1,16 @@
 name: Solidity code coverage
 
-on:
-  push:
+on: [push]
 
 jobs:
   ci:
     runs-on: ubuntu-latest
-
+    name: Solidity code coverage
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v3
         with:
-          node-version: '16.x'
+          node-version: '20.x'
       - run: npm ci
         env:
           GH_TOKEN: ${{ secrets.github_token }}

.github/workflows/linter.yaml

@@ -6,11 +6,12 @@ on:
 jobs:
   ci:
     runs-on: ubuntu-latest
+    name: Solidity linter
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v3
         with:
-          node-version: '16.x'
+          node-version: '20.x'
       - run: npm ci
         env:
           GH_TOKEN: ${{ secrets.github_token }}

.github/workflows/publish.yaml

@@ -8,11 +8,11 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Use Node.js
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v3
         with:
-          node-version: '16'
+          node-version: '20'
           registry-url: 'https://registry.npmjs.org'
 
       - name: Install dependencies

.github/workflows/slither.yml → .github/workflows/slither.yaml

@@ -5,12 +5,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Run Slither
-        uses: crytic/[email protected].0
+        uses: crytic/[email protected].2
         id: slither
         with:
-          node-version: 18
+          node-version: 20
           fail-on: high
           slither-args: --exclude controlled-delegatecall

.github/workflows/tests.yaml

@@ -1,17 +1,16 @@
 name: Run tests
 
-on:
-  push:
+on: [push]
 
 jobs:
   ci:
     runs-on: ubuntu-latest
-
+    name: Hardhat unit test
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v3
         with:
-          node-version: '16.x'
+          node-version: '20.x'
       - run: npm ci
         env:
           GH_TOKEN: ${{ secrets.github_token }}

.solhint.json

@@ -0,0 +1,23 @@
+{
+  "extends": "solhint:recommended",
+  "plugins": [],
+  "rules": {
+    "avoid-suicide": "error",
+    "avoid-sha3": "warn",
+    "comprehensive-interface": "warn",
+    "func-visibility": [
+      "warn",
+      {
+        "ignoreConstructors": true
+      }
+    ],
+    "ordering": "warn",
+    "mark-callable-contracts": "off",
+    "max-line-length": [
+      "error",
+      120
+    ],
+    "compiler-version": "off",
+    "not-rely-on-time": "off"
+  }
+}