remove duplicated entries in common upgrade log

howto/upgrades/data.csv

@@ -85,23 +85,15 @@ Date,release,count
 2023-02-06,buster,11
 2023-03-13,bullseye,86
 2023-03-13,buster,11
+2023-04-08,bookworm,1
+2023-04-08,bullseye,75
+2023-04-08,buster,9
 2023-05-08,bullseye,77
 2023-05-08,bookworm,1
 2023-05-08,buster,7
 2023-06-05,bullseye,78
 2023-06-05,buster,6
 2023-06-05,bookworm,2
-2022-10-03,bullseye,86
-2022-10-03,buster,12
-2022-11-08,bullseye,83
-2022-11-08,buster,12
-2022-12-05,bullseye,83
-2022-12-05,buster,11
-2023-02-06,bullseye,84
-2023-02-06,buster,11
-2023-04-08,bookworm,1
-2023-04-08,bullseye,75
-2023-04-08,buster,9
 2023-06-15,bullseye,76
 2023-06-15,buster,6
 2023-06-15,bookworm,4