match __version__ not only at the begnning of the file content

Author: FynnBe

conda-recipe/meta.yaml

@@ -1,7 +1,7 @@
 {% set pyproject = load_file_data('pyproject.toml') %}
 {% set version_match = load_file_regex(
   load_file="bioimageio/spec/__init__.py",
-  regex_pattern='^__version__ = "(.+)"') %}
+  regex_pattern='__version__ = "(.+)"') %}
 {% set version = version_match[1] %}
 
 package: