chore: bump squidfunk/mkdocs-material in /docs (#2410)

Bumps squidfunk/mkdocs-material from `f4332a8` to `c373999`.

---
updated-dependencies:
- dependency-name: squidfunk/mkdocs-material
  dependency-version: c3739993c3e7c92cfe649ba03cbc04f4fa9b1497886abd16267eb413cda8aecf
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/Dockerfile

@@ -1,4 +1,4 @@
-FROM squidfunk/mkdocs-material@sha256:f4332a8e8895aa303bf7f3ceede749980a98cf79f5d87ad567b4d41f037b0101
+FROM squidfunk/mkdocs-material@sha256:c3739993c3e7c92cfe649ba03cbc04f4fa9b1497886abd16267eb413cda8aecf
 
 COPY requirements.txt /tmp/
 RUN pip install --require-hashes -r /tmp/requirements.txt