OPT: Bump ynab from 2.1.0 to 3.6.0

Bumps [ynab](https://github.com/ynab/ynab-sdk-ruby) from 2.1.0 to 3.6.0.
- [Release notes](https://github.com/ynab/ynab-sdk-ruby/releases)
- [Commits](ynab/ynab-sdk-ruby@v2.1.0...3.6.0)

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

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

Gemfile.lock

@@ -134,7 +134,16 @@ GEM
     erubi (1.13.0)
     ethon (0.16.0)
       ffi (>= 1.15.0)
-    ffi (1.16.3)
+    ffi (1.17.0-aarch64-linux-gnu)
+    ffi (1.17.0-aarch64-linux-musl)
+    ffi (1.17.0-arm-linux-gnu)
+    ffi (1.17.0-arm-linux-musl)
+    ffi (1.17.0-arm64-darwin)
+    ffi (1.17.0-x86-linux-gnu)
+    ffi (1.17.0-x86-linux-musl)
+    ffi (1.17.0-x86_64-darwin)
+    ffi (1.17.0-x86_64-linux-gnu)
+    ffi (1.17.0-x86_64-linux-musl)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.6)
@@ -309,7 +318,7 @@ GEM
     turbo-rails (2.0.11)
       actionpack (>= 6.0.0)
       railties (>= 6.0.0)
-    typhoeus (1.4.0)
+    typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
@@ -327,7 +336,7 @@ GEM
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    ynab (2.1.0)
+    ynab (3.6.0)
       typhoeus (~> 1.0, >= 1.0.1)
     zeitwerk (2.7.1)