update LSIF indexing CI workflow

.github/workflows/lsif.yml

@@ -2,15 +2,12 @@ name: LSIF
 on:
   - push
 jobs:
-  build:
+  lsif-go:
     runs-on: ubuntu-latest
+    container: sourcegraph/lsif-go
     steps:
       - uses: actions/checkout@v1
       - name: Generate LSIF data
-        uses: sourcegraph/lsif-go-action@master
-        with:
-          verbose: "true"
+        run: lsif-go
       - name: Upload LSIF data
-        uses: sourcegraph/lsif-upload-action@master
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+        run: src lsif upload -github-token=${{ secrets.GITHUB_TOKEN }}