Use Slither Action (#19)

.github/workflows/slither.yml

@@ -1,49 +1,16 @@
 name: Slither
 
-on:
-  push:
-    branches:
-      - master
-  pull_request:
+on: [push, pull_request]
 
 jobs:
-  slither:
+  analyze:
     name: Slither
     runs-on: ubuntu-latest
-
     steps:
-      - uses: actions/checkout@v2
-
-      - name: Set up Node
-        uses: actions/setup-node@v2
-        with:
-          node-version: 12
-
-      - name: Set up Python 3.8
-        uses: actions/setup-python@v2
-        with:
-          python-version: 3.8
-
-      - name: Get yarn cache directory path
-        id: yarn-cache-dir-path
-        run: echo "::set-output name=dir::$(yarn cache dir)"
-
-      - name: Cache YARN dependencies
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
-          key: yarn-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            yarn-
-
-      - name: Install node dependencies
-        run: yarn install --frozen-lockfile
+    - name: Checkout repository
+      uses: actions/checkout@v2
 
-      - name: Install pip3
-        run: |
-          python -m pip install --upgrade pip
-      - name: Install slither
-        run: |
-          pip3 install slither-analyzer
-      - name: Run Slither
-        run: slither .
+    - name: Run Slither
+      uses: crytic/[email protected]
+      with:
+        node-version: 12