Bump router (#8984)

Author: brophdawg11

packages/remix-dev/package.json

@@ -29,7 +29,7 @@
     "@mdx-js/mdx": "^2.3.0",
     "@npmcli/package-json": "^4.0.1",
     "@remix-run/node": "2.8.0",
-    "@remix-run/router": "1.15.2",
+    "@remix-run/router": "1.15.3-pre.0",
     "@remix-run/server-runtime": "2.8.0",
     "@types/mdx": "^2.0.5",
     "@vanilla-extract/integration": "^6.2.0",

packages/remix-server-runtime/package.json

@@ -16,7 +16,7 @@
   "typings": "dist/index.d.ts",
   "module": "dist/esm/index.js",
   "dependencies": {
-    "@remix-run/router": "1.15.2",
+    "@remix-run/router": "1.15.3-pre.0",
     "@types/cookie": "^0.6.0",
     "@web3-storage/multipart-parser": "^1.0.0",
     "cookie": "^0.6.0",

packages/remix-testing/package.json

@@ -18,8 +18,8 @@
   "dependencies": {
     "@remix-run/node": "2.8.0",
     "@remix-run/react": "2.8.0",
-    "@remix-run/router": "1.15.2",
-    "react-router-dom": "6.22.2"
+    "@remix-run/router": "1.15.3-pre.0",
+    "react-router-dom": "6.22.3-pre.0"
   },
   "devDependencies": {
     "@types/node": "^18.17.1",