Bump httpx from 1.5.1 to 1.6.0 (#306)

Author: dependabot[bot]

Gemfile.lock

@@ -71,7 +71,7 @@ GEM
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
     http-2 (1.1.1)
-    httpx (1.5.1)
+    httpx (1.6.0)
       http-2 (>= 1.0.0)
     json (2.13.2)
     language_server-protocol (3.17.0.5)