docs(version): update package-internal version

[lukeroantreeONS]

📌 Update package-internal version, add check to release workflow to ensure consistency in future

✨ Summary

The package's build version currently differs from it's internal __version__ attribute.
This PR corrects the internal __version__ attribute, and adds a check to the release workflow to ensure it has been updated correctly before any future releases.

📜 Changes Introduced

• docs(version): update package internal version
• chore(CICD): add consistency check for internal version to release workflow

✅ Checklist

Please confirm you've completed these checks before requesting a review.

• Code passes linting with Ruff
• Security checks pass using Bandit
• API and Unit tests are written and pass using pytest
• Terraform files (if applicable) follow best practices and have been validated (terraform fmt & terraform validate)
• DocStrings follow Google-style and are added as per Pylint recommendations
• Documentation has been updated if needed

🔍 How to Test

1. rebuild the package, install the new version, run

python -c "import classifai; print(classifai.__version__)"

2. test the validation behaviour via this script (from the package root directory);
   [test_validation.sh]

#!/usr/bin/env bash
set -e
VERSION="1.0.0"
PATTERN="^## \[(v)?${VERSION}\]"
PATTERN_INIT="${VERSION}"
echo "Checking CHANGELOG.md for header: $PATTERN"
MATCH_COUNT=$(grep -c -E "$PATTERN" CHANGELOG.md || true)
if [ "$MATCH_COUNT" -eq 0 ]; then
  echo "ERROR: No changelog section found for v$VERSION" >&2
  exit 1
fi
if [ "$MATCH_COUNT" -gt 1 ]; then
  echo "ERROR: Multiple changelog sections found for v$VERSION" >&2
  exit 1
fi
echo "Changelog validation passed."
echo "Checking src/classifai/__init__.py for __version__: $PATTERN_INIT"
MATCH_COUNT_PACKAGE=$(grep -c -E "$PATTERN_INIT" src/classifai/__init__.py || true)
if [ "$MATCH_COUNT_PACKAGE" -eq 0 ]; then
  echo "ERROR: No match found for $VERSION in package's internals (src/classifai/__init__.py)" >&2
  exit 1
fi
if [ "$MATCH_COUNT_PACKAGE" -gt 1 ]; then
  echo "ERROR: Multiple entries found for $VERSION in package's internals (src/classifai/__init__.py)" >&2
  exit 1
fi
echo "Package internal consistency validation passed."

chmod +x test_validation.sh
./test_validation.sh

[frayle-ons]

LGTM, all suggested tests work fine