Bump cancancan from 3.5.0 to 3.6.1 in /backend

Bumps [cancancan](https://github.com/CanCanCommunity/cancancan) from 3.5.0 to 3.6.1.
- [Release notes](https://github.com/CanCanCommunity/cancancan/releases)
- [Changelog](https://github.com/CanCanCommunity/cancancan/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/CanCanCommunity/cancancan/commits)

---
updated-dependencies:
- dependency-name: cancancan
  dependency-version: 3.6.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/Gemfile

@@ -21,7 +21,7 @@ gem "pg"
 gem "puma", "5.6.8"
 
 # Authentication libraries
-gem "cancancan", "~> 3.5.0"
+gem "cancancan", "~> 3.6.1"
 gem "cancancan-mongoid", "~> 2.0"
 gem "devise", "~> 4.8"
 gem "devise_invitable", "~> 2.0"

backend/Gemfile.lock

@@ -114,7 +114,7 @@ GEM
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.11)
     byebug (11.1.3)
-    cancancan (3.5.0)
+    cancancan (3.6.1)
     cancancan-mongoid (2.0.0)
       cancancan (>= 2.0, < 4)
     capybara (3.40.0)
@@ -522,7 +522,7 @@ DEPENDENCIES
   bugsnag
   bullet
   byebug
-  cancancan (~> 3.5.0)
+  cancancan (~> 3.6.1)
   cancancan-mongoid (~> 2.0)
   capybara
   colored