fixup! Simplify version update check

Author: MattiSG

.github/workflows/validate.yml

@@ -95,4 +95,4 @@ jobs:
         uses: OpenTermsArchive/manage-changelog/[email protected]
 
       - name: Check version number in pyproject.toml matches next version according to changelog
-        run: grep "^version = \"${{ steps.validate-changelog.outputs.next-version }}\""
+        run: grep "^version = \"${{ steps.validate-changelog.outputs.next-version }}\"" pyproject.toml