Add babashka/fs to project.clj and deps.edn (#48)

Now that we're using it in the pods.impl ns

deps.edn

@@ -1,6 +1,7 @@
 {:deps {nrepl/bencode {:mvn/version "1.1.0"}
         cheshire/cheshire {:mvn/version "5.10.0"}
-        com.cognitect/transit-clj {:mvn/version "1.0.324"}}
+        com.cognitect/transit-clj {:mvn/version "1.0.324"}
+        babashka/fs {:mvn/version "0.1.6"}}
  :aliases
  {:sci
   {:extra-deps

project.clj

@@ -7,7 +7,8 @@
             :url "https://www.eclipse.org/legal/epl-1.0/"}
   :dependencies [[org.clojure/clojure "1.10.3"]
                  [nrepl/bencode "1.1.0"]
-                 [cheshire "5.10.0"]]
+                 [cheshire "5.10.0"]
+                 [babashka/fs "0.1.6"]]
   :deploy-repositories [["clojars" {:url "https://clojars.org/repo"
                                     :username :env/clojars_user
                                     :password :env/clojars_pass