Add changelog for 2.0.0a1 (#870)

Author: blink1073

CHANGELOG.md

@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file.
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
+## 2.0.0a1
+
+([Full Changelog](https://github.com/jupyter-server/jupyter_server/compare/v2.0.0a0...v2.0.0a1)
+
+- Address security advisory [GHSA-q874-g24w-4q9g](https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-q874-g24w-4q9g).
+
+<!-- <END NEW CHANGELOG ENTRY> -->
+
 ## 2.0.0a0
 
 ([Full Changelog](https://github.com/jupyter-server/jupyter_server/compare/v1.16.0...3e64fa5eef7fba9f8e17c30cec688254adf913bd))
@@ -60,8 +68,6 @@ All notable changes to this project will be documented in this file.
 
 [@andreyvelich](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aandreyvelich+updated%3A2022-03-29..2022-05-03&type=Issues) | [@blink1073](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Ablink1073+updated%3A2022-03-29..2022-05-03&type=Issues) | [@bollwyvl](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Abollwyvl+updated%3A2022-03-29..2022-05-03&type=Issues) | [@codecov-commenter](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Acodecov-commenter+updated%3A2022-03-29..2022-05-03&type=Issues) | [@davidbrochart](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Adavidbrochart+updated%3A2022-03-29..2022-05-03&type=Issues) | [@echarles](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aecharles+updated%3A2022-03-29..2022-05-03&type=Issues) | [@hbcarlos](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Ahbcarlos+updated%3A2022-03-29..2022-05-03&type=Issues) | [@kevin-bates](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Akevin-bates+updated%3A2022-03-29..2022-05-03&type=Issues) | [@meeseeksdev](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Ameeseeksdev+updated%3A2022-03-29..2022-05-03&type=Issues) | [@mgorny](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Amgorny+updated%3A2022-03-29..2022-05-03&type=Issues) | [@minrk](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aminrk+updated%3A2022-03-29..2022-05-03&type=Issues) | [@pre-commit-ci](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Apre-commit-ci+updated%3A2022-03-29..2022-05-03&type=Issues) | [@SylvainCorlay](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3ASylvainCorlay+updated%3A2022-03-29..2022-05-03&type=Issues) | [@welcome](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Awelcome+updated%3A2022-03-29..2022-05-03&type=Issues) | [@Wh1isper](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3AWh1isper+updated%3A2022-03-29..2022-05-03&type=Issues) | [@willingc](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Awillingc+updated%3A2022-03-29..2022-05-03&type=Issues) | [@Zsailer](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3AZsailer+updated%3A2022-03-29..2022-05-03&type=Issues)
 
-<!-- <END NEW CHANGELOG ENTRY> -->
-
 ## 1.17.0
 
 ([Full Changelog](https://github.com/jupyter-server/jupyter_server/compare/v1.16.0...2b296099777d50aa86f67faf94d5cbfde906b169))