docs: Add calendar entries for 21.0 release.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9538>

diff --git a/docs/release-calendar.csv b/docs/release-calendar.csv
index e69de29..8f41114 100644 (file)
--- a/docs/release-calendar.csv
+++ b/docs/release-calendar.csv
@@ -0,0 +1,3 @@
+21.0,2021-03-24,21.0.1,Dylan Baker\r
+,2021-04-07,21.0.2,Dylan Baker\r
+,2021-04-21,21.0.3,Dylan Baker,This is the last planned release of the 21.0.x series.\r