Merge pull request matplotlib#19974 from tacaswell/ci_rotate_circleci_keys

CI: update the ssh key used to push the devdocs

Author: QuLogic

.circleci/config.yml

@@ -182,7 +182,7 @@ jobs:
 
       - add_ssh_keys:
           fingerprints:
-            - "78:13:59:08:61:a9:e5:09:af:df:3a:d8:89:c2:84:c0"
+            - "6b:83:76:a5:7d:bd:ce:19:a4:e3:81:e0:80:16:a4:fe"
       - deploy:
           name: "Deploy new docs"
           command: ./.circleci/deploy-docs.sh