Merge pull request matplotlib#24886 from tacaswell/new_circle_deploy_key

CI: rotate the circleci deploy key

Author: QuLogic

.circleci/config.yml

@@ -234,7 +234,8 @@ jobs:
 
       - add_ssh_keys:
           fingerprints:
-            - "6b:83:76:a5:7d:bd:ce:19:a4:e3:81:e0:80:16:a4:fe"
+            - "be:c3:c1:d8:fb:a1:0e:37:71:72:d7:a3:40:13:8f:14"
+
       - deploy:
           name: "Deploy new docs"
           command: ./.circleci/deploy-docs.sh