chore: fix gradlew.bat line endings

The dependabot Gradle-wrapper bump in 91809c3 re-stored gradlew.bat
with CRLF bytes in the blob, undoing the earlier renormalization in
cb1517e. Because .gitattributes declares *.bat text eol=crlf, git's
clean filter normalizes to LF before hashing, so the working tree
hash never matched the index hash and the file appeared perpetually
modified.

That broke the nightly "Update API" workflow: peter-evans/create-pull-request
runs git reset --hard followed by git checkout -B, and the spurious
"modified" gradlew.bat caused the checkout to abort.

Author: vroldanbet