GitHub: remove CI builds for <23, add 26

Author: guggero

.github/workflows/build.yaml

@@ -8,32 +8,14 @@ jobs:
     strategy:
       matrix:
         version:
+          - '26'
+          - '26/alpine'
           - '25'
           - '25/alpine'
           - '24'
           - '24/alpine'
           - '23'
           - '23/alpine'
-          - '22'
-          - '22/alpine'
-          - '0.21'
-          - '0.21/alpine'
-          - '0.20'
-          - '0.20/alpine'
-          - '0.19'
-          - '0.19/alpine'
-          - '0.18'
-          - '0.18/alpine'
-          - '0.17'
-          - '0.17/alpine'
-          - '0.16'
-          - '0.16/alpine'
-          - '0.13'
-          - '0.13/alpine'
-          - '0.12'
-          - '0.12/alpine'
-          - '0.11'
-          - '0.11/alpine'
       fail-fast: false
     steps:
       - name: Set up Docker Buildx