Revert garden migration for now

Tests are failing. And, of course, `lein figwheel` doesn't work on apple
arm so need to figure out a way to get a test environment running to
figure out what's going on...

project.clj

@@ -8,7 +8,7 @@
 
   :dependencies [[org.clojure/clojure "1.10.0"]
                  [org.clojure/clojurescript "1.10.520"]
-                 [com.lambdaisland/garden "1.5.569"]
+                 [garden "1.3.10"]
                  [net.cgrand/macrovich "0.2.1"]]
 
   :plugins [[lein-figwheel "0.5.19"]