Override head partial to ignore deprecated GA script from Docsy

[marcduiker]

Thank you for helping make the Dapr documentation better!

Please follow this checklist before submitting:

• Commits are signed with Developer Certificate of Origin (DCO - learn more)
• Read the contribution guide
• Commands include options for Linux, MacOS, and Windows within codetabs
• New file and folder names are globally unique
• Page references use shortcodes instead of markdown or URL links
• Images use HTML style and have alternative text
• Places where multiple code/command options are given have codetabs

In addition, please fill out the following to help reviewers understand this pull request:

Description

The current Docsy version contains outdated html partials that try load Google Analytics files that no longer exists. This breaks Hugo when running the website locally.

Upgrading to the latest Docsy results in many more errors. This fix overrides the default head partial with a custom one without the GA scripts. Eventually, a complete update to the latest Docsy needs to be done to ensure quick upgrades.

Issue reference

#4281