Update script for release

Author: brophdawg11

CHANGELOG.md

@@ -230,7 +230,7 @@ Date: YYYY-MM-DD
 
 ## v6.30.1
 
-Date: 2025-05-19
+Date: 2025-05-20
 
 ### Patch Changes
 

scripts/changesets-release.sh

@@ -1,8 +1,11 @@
 #!/bin/bash
 
+PACKAGE="./packages/react-router/package.json"
+IS_PRERELEASE=$(node -e "console.log(/-pre/.test(require('${PACKAGE}').version))")
+
 # Can only provide a custom --tag when not in prerelease mode
 # The prerelease tags come from the `pre.json`` "tag" field
-if [ -f ".changeset/pre.json" ];
+if [ ${IS_PRERELEASE} == "true" ]; then
   echo "Publishing with default changesets tag (pre-release)"
   pnpm exec changeset publish
 else