go: update modules

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

vendor/github.com/urfave/cli/v2/mkdocs.yml

@@ -0,0 +1,62 @@
+# NOTE: the mkdocs dependencies will need to be installed out of
+# band until this whole thing gets more automated:
+#
+#     pip install -r mkdocs-requirements.txt
+#
+
+site_name: urfave/cli
+site_url: https://cli.urfave.org/
+repo_url: https://github.com/urfave/cli
+edit_uri: edit/main/docs/
+nav:
+  - Home: index.md
+  - v2 Manual: v2/index.md
+  - v1 Manual: v1/index.md
+theme:
+  name: material
+  palette:
+    - media: "(prefers-color-scheme: light)"
+      scheme: default
+      toggle:
+        icon: material/brightness-4
+        name: dark mode
+    - media: "(prefers-color-scheme: dark)"
+      scheme: slate
+      toggle:
+        icon: material/brightness-7
+        name: light mode
+plugins:
+  - git-revision-date-localized
+  - search
+# NOTE: this is the recommended configuration from
+# https://squidfunk.github.io/mkdocs-material/setup/extensions/#recommended-configuration
+markdown_extensions:
+  - abbr
+  - admonition
+  - attr_list
+  - def_list
+  - footnotes
+  - meta
+  - md_in_html
+  - toc:
+      permalink: true
+  - pymdownx.arithmatex:
+      generic: true
+  - pymdownx.betterem:
+      smart_enable: all
+  - pymdownx.caret
+  - pymdownx.details
+  - pymdownx.emoji:
+      emoji_index: !!python/name:materialx.emoji.twemoji
+      emoji_generator: !!python/name:materialx.emoji.to_svg
+  - pymdownx.highlight
+  - pymdownx.inlinehilite
+  - pymdownx.keys
+  - pymdownx.mark
+  - pymdownx.smartsymbols
+  - pymdownx.superfences
+  - pymdownx.tabbed:
+      alternate_style: true
+  - pymdownx.tasklist:
+      custom_checkbox: true
+  - pymdownx.tilde