release/patches: update patch release September cycle

Signed-off-by: Carlos Panato <ctadeu@gmail.com>

data/releases/schedule.yaml

@@ -1,16 +1,22 @@
 schedules:
 - release: 1.22
-  next: 1.22.1
-  cherryPickDeadline: 2021-08-16
-  targetDate: 2021-08-19
+  next: 1.22.2
+  cherryPickDeadline: 2021-09-10
+  targetDate: 2021-09-15
   endOfLifeDate: 2022-10-28
   previousPatches:
+    - release: 1.22.1
+      cherryPickDeadline: 2021-08-16
+      targetDate: 2021-08-19
 - release: 1.21
-  next: 1.21.4
-  cherryPickDeadline: 2021-08-07
-  targetDate: 2021-08-11
+  next: 1.21.5
+  cherryPickDeadline: 2021-09-10
+  targetDate: 2021-09-15
   endOfLifeDate: 2022-06-28
   previousPatches:
+    - release: 1.21.4
+      cherryPickDeadline: 2021-08-07
+      targetDate: 2021-08-11
     - release: 1.21.3
       cherryPickDeadline: 2021-07-10
       targetDate: 2021-07-14
@@ -22,11 +28,14 @@ schedules:
       targetDate: 2021-05-12
       note: Regression https://groups.google.com/g/kubernetes-dev/c/KuF8s2zueFs
 - release: 1.20
-  next: 1.20.10
-  cherryPickDeadline: 2021-08-07
-  targetDate: 2021-08-11
+  next: 1.20.11
+  cherryPickDeadline: 2021-09-10
+  targetDate: 2021-09-15
   endOfLifeDate: 2022-02-28
   previousPatches:
+    - release: 1.20.10
+      cherryPickDeadline: 2021-08-07
+      targetDate: 2021-08-11
     - release: 1.20.9
       cherryPickDeadline: 2021-07-10
       targetDate: 2021-07-14
@@ -58,11 +67,14 @@ schedules:
       targetDate: 2020-12-18
       note: "Tagging Issue https://groups.google.com/g/kubernetes-dev/c/dNH2yknlCBA"
 - release: 1.19
-  next: 1.19.14
-  cherryPickDeadline: 2021-08-07
-  targetDate: 2021-08-11
+  next: 1.19.15
+  cherryPickDeadline: 2021-09-10
+  targetDate: 2021-09-15
   endOfLifeDate: 2021-10-28
   previousPatches:
+    - release: 1.19.14
+      cherryPickDeadline: 2021-08-07
+      targetDate: 2021-08-11
     - release: 1.19.13
       cherryPickDeadline: 2021-07-10
       targetDate: 2021-07-14