Riscv: Bump Ubuntu version to 23.10

Test: QEMU boots
Change-Id: I397f9d82a09fbcc8d7e40f23dc1cec1fc48738d4
diff --git a/tools/buildbot-utils.sh b/tools/buildbot-utils.sh
index 70fa01a..1cdd275 100755
--- a/tools/buildbot-utils.sh
+++ b/tools/buildbot-utils.sh
@@ -87,7 +87,7 @@
   export RSYNC_RSH="ssh -i ~/.ssh/ubuntu -p $ART_TEST_SSH_PORT -o StrictHostKeyChecking=no" # don't prefix with "ART_", rsync expects this name
 
   if [[ "$TARGET_ARCH" =~ ^(arm64|riscv64)$ ]]; then
-    export ART_TEST_VM_IMG="ubuntu-22.04-server-cloudimg-$TARGET_ARCH.img"
+    export ART_TEST_VM_IMG="ubuntu-23.10-server-cloudimg-$TARGET_ARCH.img"
     export ART_TEST_VM_DIR="$ANDROID_BUILD_TOP/vm/$TARGET_ARCH"
     export ART_TEST_VM="$ART_TEST_VM_DIR/$ART_TEST_VM_IMG"
   else
diff --git a/tools/buildbot-vm.sh b/tools/buildbot-vm.sh
index 6c324c3..fef2967 100755
--- a/tools/buildbot-vm.sh
+++ b/tools/buildbot-vm.sh
@@ -45,18 +45,18 @@
 
     # sudo apt install qemu-system-<arch> qemu-efi cloud-image-utils
 
-    # Get the cloud image for Ubunty 22.04 (Jammy)
-    wget "http://cloud-images.ubuntu.com/releases/22.04/release/$ART_TEST_VM_IMG"
+    # Get the cloud image for Ubunty 23.10 (Mantic Minotaur)
+    wget "http://cloud-images.ubuntu.com/releases/23.10/release/$ART_TEST_VM_IMG"
 
     if [[ "$TARGET_ARCH" = "riscv64" ]]; then
         # Get U-Boot for Ubuntu 22.04 (Jammy)
         get_stable_binary \
-            u/u-boot/u-boot-qemu_2022.01+dfsg-2ubuntu2.3_all.deb \
+            u/u-boot/u-boot-qemu_2023.07+dfsg-1ubuntu2_all.deb \
             usr/lib/u-boot/qemu-riscv64_smode/uboot.elf
 
         # Get OpenSBI for Ubuntu 22.04 (Jammy)
         get_stable_binary \
-            o/opensbi/opensbi_1.3-1ubuntu0.22.04.2_all.deb \
+            o/opensbi/opensbi_1.3-1ubuntu0.23.04.2_all.deb \
             usr/lib/riscv64-linux-gnu/opensbi/generic/fw_jump.elf
 
     elif [[ "$TARGET_ARCH" = "arm64" ]]; then