Update kernel version options in the workflow

Author: ophub

.github/workflows/build-armbian-arm64-server-image.yml

@@ -221,10 +221,10 @@ on:
           - 6.12.y
           - 6.18.y
           - 5.10.y_5.15.y
-          - 5.15.y_6.1.y
-          - 6.1.y_6.12.y
           - 6.1.y_6.6.y
-          - 6.6.y_6.12.y
+          - 6.12.y_6.18.y
+          - 6.1.y_6.12.y
+          - 6.1.y_6.18.y
       auto_kernel:
         description: "Auto use the latest kernel."
         required: false

.github/workflows/build-armbian-using-official-image.yml

@@ -215,10 +215,10 @@ on:
           - 6.12.y
           - 6.18.y
           - 5.10.y_5.15.y
-          - 5.15.y_6.1.y
-          - 6.1.y_6.12.y
           - 6.1.y_6.6.y
-          - 6.6.y_6.12.y
+          - 6.12.y_6.18.y
+          - 6.1.y_6.12.y
+          - 6.1.y_6.18.y
       auto_kernel:
         description: "Auto use the latest kernel."
         required: false

.github/workflows/build-armbian-using-releases-files.yml

@@ -221,10 +221,10 @@ on:
           - 6.12.y
           - 6.18.y
           - 5.10.y_5.15.y
-          - 5.15.y_6.1.y
-          - 6.1.y_6.12.y
           - 6.1.y_6.6.y
-          - 6.6.y_6.12.y
+          - 6.12.y_6.18.y
+          - 6.1.y_6.12.y
+          - 6.1.y_6.18.y
       auto_kernel:
         description: "Auto use the latest kernel."
         required: false