build(deps): bump sablon from 0.3.2 to 0.4.0

Bumps [sablon](https://github.com/senny/sablon) from 0.3.2 to 0.4.0.
- [Commits](senny/sablon@v0.3.2...v0.4.0)

---
updated-dependencies:
- dependency-name: sablon
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -436,9 +436,9 @@ GEM
       ffi (~> 1.12)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
-    sablon (0.3.2)
+    sablon (0.4.0)
       nokogiri (>= 1.8.5)
-      rubyzip (>= 1.1.1)
+      rubyzip (>= 1.3.0)
     safe_shell (1.1.0)
     scout_apm (5.3.5)
       parser