repurpose bcd update for web features update with old version for testing

Author: NiklasMerz

bcd_version

@@ -1 +1 @@
-7.1.16
+3.6.0

package-lock.json

@@ -1,5 +1,4 @@
 import { features, type FeatureDataPlusWebview } from "web-features-plus-webview";
-import { readFileSync } from "fs";
 import { stdout } from "process";
 
 type WebViewStatus = boolean | "high" | "low" | "unknown";

tools/baseline.ts

@@ -9,6 +9,9 @@
 '''
 
 import urllib.request, json
+import os
+import subprocess
+from pathlib import Path
 
 CDN_URL = "https://unpkg.com/@mdn/browser-compat-data/data.json"
 VERSION_FILE = "bcd_version"
@@ -35,7 +38,14 @@ def validateNotMajor(prevVersion, nextVersion):
             file.write(version)
             file.truncate()
 
-            # TODO update web features npm package
+            # Run `npm update web-features` at the repository root to refresh package-lock.json
+            try:
+                repo_root = Path(__file__).resolve().parent.parent
+                subprocess.run(["npm", "update", "web-features"], cwd=str(repo_root), check=True)
+            except Exception as e:
+                print(f"Warning: failed to run 'npm update web-features': {e}")
+                exit(1)
+            
         else:
             # Exit with a non-zero code so that CI/CD can catch this.
             print("Major version change detected, not updating.")