Bump dockerfile-rails from 1.5.2 to 1.5.3

Bumps [dockerfile-rails](https://github.com/fly-apps/dockerfile-rails) from 1.5.2 to 1.5.3.
- [Release notes](https://github.com/fly-apps/dockerfile-rails/releases)
- [Commits](fly-apps/dockerfile-rails@v1.5.2...v1.5.3)

---
updated-dependencies:
- dependency-name: dockerfile-rails
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -106,7 +106,7 @@ GEM
       reline (>= 0.3.1)
     diff-lcs (1.5.0)
     diffy (3.4.2)
-    dockerfile-rails (1.5.2)
+    dockerfile-rails (1.5.3)
       rails
     dotenv (2.8.1)
     erubi (1.12.0)
@@ -191,13 +191,13 @@ GEM
     net-smtp (0.3.3)
       net-protocol
     nio4r (2.5.9)
-    nokogiri (1.15.3-aarch64-linux)
+    nokogiri (1.15.4-aarch64-linux)
       racc (~> 1.4)
-    nokogiri (1.15.3-arm64-darwin)
+    nokogiri (1.15.4-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.15.3-x86_64-darwin)
+    nokogiri (1.15.4-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.15.3-x86_64-linux)
+    nokogiri (1.15.4-x86_64-linux)
       racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)