ci: don't use next's github releases as source of most recent stable/canary versions (#2686)

Author: pieh

.github/workflows/test-e2e.yml

@@ -74,19 +74,11 @@ jobs:
             if [ "${VERSION_SPEC}" != "[" ]; then
               VERSION_SPEC+=","
             fi
-            VERSION_SPEC+="{\"selector\":\"$SELECTOR\""
-
-            if [ "$SELECTOR" == "latest" ]; then
-              VERSION_SPEC+=",\"tag\":\"$(curl -s https://api.github.com/repos/vercel/next.js/releases/latest | jq -r .tag_name)\""
-            elif [ "$SELECTOR" == "canary" ]; then
-              VERSION_SPEC+=",\"tag\":\"$(curl -s https://api.github.com/repos/vercel/next.js/releases | jq -r '.[] | select(.prerelease == true) | .tag_name' | head -n 1)\""
-            else
-              VERSION_SPEC+=",\"tag\":\"v$SELECTOR\""
-            fi
 
-            VERSION_SPEC+=",\"version\":\"$(npm view next@$SELECTOR version)\""
+            VERSION=$(npm view next@$SELECTOR version)
+            TAG="v$VERSION"
 
-            VERSION_SPEC+="}"
+            VERSION_SPEC+="{\"selector\":\"$SELECTOR\",\"tag\":\"$TAG\",\"version\":\"$VERSION\"}"
           done
           VERSION_SPEC+="]"
           echo "version_spec=$VERSION_SPEC" >> $GITHUB_OUTPUT