.github/workflows: Update sourcegraph index task.

.github/workflows/ci.yml

@@ -159,15 +159,23 @@ jobs:
     - name: Check relative links
       run: make -C website check-rellinks
 
-  lsif:
-    name: Upload SourceGraph LSIF
+  sourcegraph_index:
+    name: Upload SourceGraph index
     if: github.repository == 'elves/elvish' && github.event_name == 'push'
     runs-on: ubuntu-latest
-    container: sourcegraph/lsif-go:latest
     steps:
     - name: Checkout code
       uses: actions/checkout@v4
-    - name: Generate LSIF data
-      run: lsif-go
-    - name: Upload LSIF data
-      run: src lsif upload -github-token=${{ secrets.GITHUB_TOKEN }} -ignore-upload-failure
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 1.23.x
+    - name: Get tools
+      run: |
+        curl -L https://sourcegraph.com/.api/src-cli/src_linux_amd64 -o /usr/local/bin/src
+        chmod +x /usr/local/bin/src
+        go install github.com/sourcegraph/scip-go/cmd/scip-go@latest
+    - name: Generate index
+      run: scip-go
+    - name: Upload index
+      run: src code-intel upload -github-token=${{ secrets.GITHUB_TOKEN }} -no-progress