Bump sorbet from 0.5.9959 to 0.5.9988 (#926)

Bumps [sorbet](https://github.com/sorbet/sorbet) from 0.5.9959 to 0.5.9988.
- [Release notes](https://github.com/sorbet/sorbet/releases)
- [Commits](https://github.com/sorbet/sorbet/commits)

---
updated-dependencies:
- dependency-name: sorbet
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -273,21 +273,21 @@ GEM
       rack (~> 2.0)
       redis (>= 4.2.0)
     smart_properties (1.17.0)
-    sorbet (0.5.9959)
-      sorbet-static (= 0.5.9959)
-    sorbet-runtime (0.5.9959)
-    sorbet-static (0.5.9959-universal-darwin-14)
-    sorbet-static (0.5.9959-universal-darwin-15)
-    sorbet-static (0.5.9959-universal-darwin-16)
-    sorbet-static (0.5.9959-universal-darwin-17)
-    sorbet-static (0.5.9959-universal-darwin-18)
-    sorbet-static (0.5.9959-universal-darwin-19)
-    sorbet-static (0.5.9959-universal-darwin-20)
-    sorbet-static (0.5.9959-universal-darwin-21)
-    sorbet-static (0.5.9959-x86_64-linux)
-    sorbet-static-and-runtime (0.5.9959)
-      sorbet (= 0.5.9959)
-      sorbet-runtime (= 0.5.9959)
+    sorbet (0.5.9988)
+      sorbet-static (= 0.5.9988)
+    sorbet-runtime (0.5.9988)
+    sorbet-static (0.5.9988-universal-darwin-14)
+    sorbet-static (0.5.9988-universal-darwin-15)
+    sorbet-static (0.5.9988-universal-darwin-16)
+    sorbet-static (0.5.9988-universal-darwin-17)
+    sorbet-static (0.5.9988-universal-darwin-18)
+    sorbet-static (0.5.9988-universal-darwin-19)
+    sorbet-static (0.5.9988-universal-darwin-20)
+    sorbet-static (0.5.9988-universal-darwin-21)
+    sorbet-static (0.5.9988-x86_64-linux)
+    sorbet-static-and-runtime (0.5.9988)
+      sorbet (= 0.5.9988)
+      sorbet-runtime (= 0.5.9988)
     spoom (1.1.11)
       sorbet (>= 0.5.9204)
       sorbet-runtime (>= 0.5.9204)