Fix #1224 Deprecated code warning in hugo v0.112.0

[darrenkearney]

Changed site variables from 'Language.Params' -> 'Site.Params'.
Note this change may conflict with hugo versions less than v0.112.0

See hugo docs:
https://gohugo.io/content-management/multilingual/#changes-in-hugo-01120

See hugo-PaperMod Issue:
#1224

modified:   _default/single.html
modified:   partials/header.html

What does this PR change? What problem does it solve?
Issue described here: #1224

Was the change discussed in an issue or in the Discussions before?
No.

PR Checklist

• This change adds/updates translations and I have used the template present here.
• I have enabled maintainer edits for this PR.
• I have verified that the code works as described/as intended.
• This change adds a Social Icon which has a permissive license to use it.
• This change does not include any CDN resources/links.
• This change does not include any unrelated scripts such as bash and python scripts.
• [?] This change updates the overridden internal templates from HUGO's repository.

I'm not 100% certain about the last item in the PR checklist. Please let me know if this is an issue.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[SirUli]

Looks like bep had second thoughts on this: gohugoio/hugo#11025

No longer a warning after 0.112.4

[darrenkearney]

Looks like bep had second thoughts on this: gohugoio/hugo#11025

No longer a warning after 0.112.4

Thanks! Closing this pull request.