chore: Bump jekyll-toc from 0.18.0 to 0.19.0 (#842)

Bumps [jekyll-toc](https://github.com/toshimaru/jekyll-toc) from 0.18.0 to 0.19.0.
- [Release notes](https://github.com/toshimaru/jekyll-toc/releases)
- [Commits](https://github.com/toshimaru/jekyll-toc/compare/v0.18.0...v0.19.0)

---
updated-dependencies:
- dependency-name: jekyll-toc
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -54,7 +54,7 @@ GEM
       io-event (~> 1.1)
       timers (~> 4.1)
     base64 (0.2.0)
-    bigdecimal (3.1.6)
+    bigdecimal (3.1.8)
     builder (3.2.4)
     coffee-script (2.4.1)
       coffee-script-source
@@ -166,7 +166,7 @@ GEM
       jekyll (>= 3.7, < 5.0)
     jekyll-titles-from-headings (0.5.3)
       jekyll (>= 3.3, < 5.0)
-    jekyll-toc (0.18.0)
+    jekyll-toc (0.19.0)
       jekyll (>= 3.9)
       nokogiri (~> 1.12)
     jekyll-watch (2.2.1)
@@ -191,7 +191,7 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
     mercenary (0.4.0)
-    mini_portile2 (2.8.6)
+    mini_portile2 (2.8.7)
     mini_racer (0.12.0)
       libv8-node (~> 21.7.2.0)
     minitest (5.22.2)