products-feed: RESPONSE_KEY/SECRET_KEY having non-ascii characters breaks google.xml generation

[djkato]

When the RESPONSE_KEY or SECRET_KEY has non-ascii characters or symbols, the product feed app breaks and returns {"error":"Internal server error"} when trying to preview the google.xml feed.
examle .env for products-feed that breaks the app:

REQUEST_SECRET="íôéššôťí-ščíšô-taíÁôshrioty^#-*-*jhúxžk-jh/"
SECRET_KEY="íôéššôťí-ščíšô-taíÁôshrioty^#-*-*jhúxžk-jh/"
...

apps/apps/products-feed/src/pages/api/feed/[url]/[channel]/google.xml.ts

Line 88 in 9a030df

authorization: env.REQUEST_SECRET,

apps/apps/products-feed/src/lib/metadata-manager.ts

Line 105 in 9a030df

encryptionKey: env.SECRET_KEY,

Issue could be on these lines, maybe the secret has to be made uri safe with encodeURI()? Or maybe saleor doesn't support non-ascii characers?