test against 5.12-rc2

Dockerfile

@@ -1,10 +1,10 @@
 FROM ubuntu:latest AS build
 
-ENV KVER=5.10.0-051000rc2-generic
-ARG URL_LINUX_HEADERS=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc2/amd64/linux-headers-5.10.0-051000rc2_5.10.0-051000rc2.202011012330_all.deb
-ARG URL_LINUX_HEADERS_GENERIC=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc2/amd64/linux-headers-5.10.0-051000rc2-generic_5.10.0-051000rc2.202011012330_amd64.deb
-ARG URL_LINUX_MODULES=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc2/amd64/linux-modules-5.10.0-051000rc2-generic_5.10.0-051000rc2.202011012330_amd64.deb
-ARG URL_LINUX_IMAGE=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.10-rc2/amd64/linux-image-unsigned-5.10.0-051000rc2-generic_5.10.0-051000rc2.202011012330_amd64.deb
+ENV KVER=5.12.0-051200rc2-generic
+ARG URL_LINUX_HEADERS=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12-rc2/amd64/linux-headers-5.12.0-051200rc2_5.12.0-051200rc2.202103052202_all.deb
+ARG URL_LINUX_HEADERS_GENERIC=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12-rc2/amd64/linux-headers-5.12.0-051200rc2-generic_5.12.0-051200rc2.202103052202_amd64.deb
+ARG URL_LINUX_MODULES=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12-rc2/amd64/linux-modules-5.12.0-051200rc2-generic_5.12.0-051200rc2.202103052202_amd64.deb
+ARG URL_LINUX_IMAGE=https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12-rc2/amd64/linux-image-unsigned-5.12.0-051200rc2-generic_5.12.0-051200rc2.202103052202_amd64.deb
 
 ENV WORKDIR /build/