Release: Bump version to 10.4.0-pre (#80412)

"Release: Updated versions in package to 10.4.0-pre"

Co-authored-by: grafana-delivery-bot[bot] <132647405+grafana-delivery-bot[bot]@users.noreply.github.com>

packages/grafana-e2e/package.json

@@ -2,7 +2,7 @@
   "author": "Grafana Labs",
   "license": "Apache-2.0",
   "name": "@grafana/e2e",
-  "version": "10.3.0-pre",
+  "version": "10.4.0-pre",
   "description": "Grafana End-to-End Test Library",
   "keywords": [
     "cli",
@@ -63,8 +63,8 @@
     "@babel/core": "7.23.2",
     "@babel/preset-env": "7.23.2",
     "@cypress/webpack-preprocessor": "5.17.1",
-    "@grafana/e2e-selectors": "10.3.0-pre",
-    "@grafana/schema": "10.3.0-pre",
+    "@grafana/e2e-selectors": "10.4.0-pre",
+    "@grafana/schema": "10.4.0-pre",
     "@grafana/tsconfig": "^1.2.0-rc1",
     "@mochajs/json-file-reporter": "^1.2.0",
     "babel-loader": "9.1.3",