filebase64sha256 Function

⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️

[!IMPORTANT]
Documentation Update: Product documentation previously located in /website has moved to the hashicorp/web-unified-docs repository, where all product documentation is now centralized. Please make contributions directly to web-unified-docs, since changes to /website in this repository will not appear on developer.hashicorp.com. ⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️

filebase64sha256 is a variant of base64sha256 that hashes the contents of a given file rather than a literal string.

This is similar to base64sha256(file(filename)), but because file accepts only UTF-8 text it cannot be used to create hashes for binary files.