chore(deps): bump squidfunk/mkdocs-material from 96abcbb to 257eca8 in /docs (#2662)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Andrea Amorosi <dreamorosi@gmail.com>

Author: dependabot[bot]

docs/Dockerfile

@@ -1,5 +1,5 @@
 # version 9.5.2
-FROM squidfunk/mkdocs-material@sha256:96abcbb1bb6d4d79a6a142fe88150b3862b2b297fe45e6656b154d978b1787eb
+FROM squidfunk/mkdocs-material@sha256:257eca88da7f42242cd05e8cebf6d10ebd079edc207b089ad3f4f1ad107b0348
 
 ADD requirements.txt /tmp/
 RUN pip install --require-hashes -r /tmp/requirements.txt