Upgrade to android13-5.15 kernel

... in preparation for the migration to android14-5.15 kernel.

In addition, drop the version suffix from the module names to make
version upgrade less intrusive.

Bug: 233317671
Test: watch TH
Change-Id: Id1fe79c848c5ecb9c3ff5c0ba2c2527e7d907d0e
diff --git a/microdroid/microdroid.json b/microdroid/microdroid.json
index aff0b7b..bf8d93e 100644
--- a/microdroid/microdroid.json
+++ b/microdroid/microdroid.json
@@ -5,7 +5,7 @@
       "partitions": [
         {
           "label": "boot_a",
-          "path": "/apex/com.android.virt/etc/fs/microdroid_boot-5.10.img"
+          "path": "/apex/com.android.virt/etc/fs/microdroid_boot.img"
         },
         {
           "label": "init_boot_a",
@@ -13,7 +13,7 @@
         },
         {
           "label": "vendor_boot_a",
-          "path": "/apex/com.android.virt/etc/fs/microdroid_vendor_boot-5.10.img"
+          "path": "/apex/com.android.virt/etc/fs/microdroid_vendor_boot.img"
         },
         {
           "label": "vbmeta_a",