Update resource gallery (ProjectPythia#475)

* Update update-resource-gallery.yaml

Correct the fact that json file data being dumped into yaml file with incorrect format

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Simple line break added

* don't overwrite yaml data

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* add loader

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Co-authored-by: Orhan Eroglu <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

.github/workflows/update-resource-gallery.yaml

@@ -98,7 +98,7 @@ jobs:
               new_data = json.load(file)
 
           with open(resource_gallery_file, 'r') as yaml_file:
-              existing_data = yaml.load(yaml_file) or []
+              existing_data = yaml.load(yaml_file, Loader=yaml.SafeLoader) or []
 
           existing_data.append(new_data)