Bump pygtkspellcheck from 5.0.2 to 5.0.3

Bumps [pygtkspellcheck](https://github.com/koehlma/pygtkspellcheck) from 5.0.2 to 5.0.3.
- [Release notes](https://github.com/koehlma/pygtkspellcheck/releases)
- [Changelog](https://github.com/koehlma/pygtkspellcheck/blob/master/CHANGELOG)
- [Commits](koehlma/pygtkspellcheck@v5.0.2...v5.0.3)

---
updated-dependencies:
- dependency-name: pygtkspellcheck
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -5,7 +5,7 @@ skytemple-ssb-emulator==1.6.1.post1
 explorerscript==0.1.4
 range-typed-integers >= 1.0.0
 nest-asyncio==1.5.7
-pygtkspellcheck==5.0.2
+pygtkspellcheck==5.0.3
 git+https://github.com/skytemple/skytemple-files@master#egg=skytemple_files
 pmdsky-debug-py
 git+https://github.com/skytemple/skytemple-icons@main#egg=skytemple_icons