fix: correct version extraction in GitHub Actions workflow

This change corrects the version extraction in the GitHub Actions workflow by using the correct context for the release event.

chore: bump version to 0.4.0

This commit bumps the version of the AlleleFinder package from 0.3.9 to 0.4.0.

.github/workflows/publish.yml

@@ -69,7 +69,7 @@ jobs:
       run: conda install -y conda-build
     - name: Get version and download source code
       run: |
-        echo "VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV  # Extract the version from the GitHub tag
+        echo "VERSION=${{ github.event.release.tag_name }}" >> $GITHUB_ENV
         wget https://github.com/OLC-Bioinformatics/AlleleFinder/archive/$VERSION.tar.gz
     - name: Calculate hash
       run: |

allele_tools/version.py

@@ -1,4 +1,4 @@
 """
 AlleleFinder version
 """
-__version__ = '0.3.9'
+__version__ = '0.4.0'