Fix release pipeline

Author: RobbeSneyders

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
         python-version: '3.10'
 
     - name: Update version
-      run: sed -i "s/version = .*/^version = '${{github.ref_name}}'/" pyproject.toml
+      run: sed -i "s/^version = .*/version = '${{github.ref_name}}'/" pyproject.toml
 
     - name: Build a binary wheel and a source tarball
       run: |