Bump slim from 3.0.9 to 5.2.1 (#207)

Bumps [slim](https://github.com/slim-template/slim) from 3.0.9 to 5.2.1.
- [Release notes](https://github.com/slim-template/slim/releases)
- [Changelog](https://github.com/slim-template/slim/blob/main/CHANGES)
- [Commits](slim-template/slim@v3.0.9...v5.2.1)

---
updated-dependencies:
- dependency-name: slim
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Gemfile

@@ -17,7 +17,7 @@ gem "rubyXL"
 gem "sentry-raven", "~> 3.0"
 gem "sinatra"
 gem "sinatra-contrib"
-gem "slim", "< 4.0.0"
+gem "slim", "< 6.0.0"
 
 group :test do
   gem "cucumber", "< 4.0.0"

Gemfile.lock

@@ -229,11 +229,11 @@ GEM
       rack-protection (= 2.2.3)
       sinatra (= 2.2.3)
       tilt (~> 2.0)
-    slim (3.0.9)
-      temple (>= 0.7.6, < 0.9)
-      tilt (>= 1.3.3, < 2.1)
-    temple (0.8.2)
-    tilt (2.0.11)
+    slim (5.2.1)
+      temple (~> 0.10.0)
+      tilt (>= 2.1.0)
+    temple (0.10.3)
+    tilt (2.3.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.4.2)
@@ -273,7 +273,7 @@ DEPENDENCIES
   simplecov
   sinatra
   sinatra-contrib
-  slim (< 4.0.0)
+  slim (< 6.0.0)
 
 RUBY VERSION
    ruby 3.1.4p223