Drop the dependency on org.clojure/data.codec

as Java 8 already contains Base64, see
https://github.com/clojure/data.codec/?tab=readme-ov-file#base64

Author: egli

project.clj

@@ -59,7 +59,6 @@
                  [babashka/fs "0.2.12"]
                  [pandect "1.0.2"]
                  [org.clojure/data.zip "1.0.0"]
-                 [org.clojure/data.codec "0.2.1"] ;; for base64 encoding in mdr2.pipeline2.core
                  [com.novemberain/pantomime "2.11.0" :exclusions [com.google.guava/guava]]
                  [clj-http "3.12.3"]
                  [org.clojure/data.csv "1.0.1"]

src/clj/mdr2/pipeline2/core.clj

@@ -3,7 +3,6 @@
   API](https://daisy.github.io/pipeline/WebServiceAPI)"
   (:require [clj-http.client :as client]
             [clj-http.util :refer [url-encode]]
-            [clojure.data.codec.base64 :as b64]
             [clojure.data.xml :as xml]
             [clojure.data.zip :as zf]
             [clojure.data.zip.xml :refer [attr xml-> xml1->]]
@@ -14,17 +13,17 @@
             [mdr2.config :refer [env]]
             [pandect.algo.sha1 :as pandect]
             [clojure.tools.logging :as log])
-  (:import [java.util.zip ZipEntry ZipOutputStream]))
+  (:import [java.util.zip ZipEntry ZipOutputStream]
+           [java.util Base64]))
 
 (def ws-url "http://localhost:8181/ws")
 
 (def ^:private timeout 1000)
 (def ^:private poll-interval 3000)
 
 (defn- create-hash [message signing-key]
-  (-> (pandect/sha1-hmac-bytes message signing-key)
-      b64/encode
-      String.))
+  (->> (pandect/sha1-hmac-bytes message signing-key)
+       (.encodeToString (Base64/getUrlEncoder))))
 
 (defn auth-query-params [uri]
   (let [timestamp (time/format :iso-local-date-time (time/local-date-time))