circleci/config.yml: Increase UROOT_QEMU_TIMEOUT_X fixes build failures
circleci/config.yml: Increase UROOT_QEMU_TIMEOUT_X fixes build failures

This PR will bump the UROOT_QEMU_TIMEOUT_X value to 3 for QEMU VM tests.

Local `circleci build --job test` builds consitently failed for me
before increasing the timeout value. Also noticed these 'random' build
failures for PR's which passed after rerunning the ci-tests.

Signed-off-by: Tim Rots <303d85e35fdeaa7baaeca9350aad42402c9e3308@protonmail.ch>

hugelgupf/u-root,hugelgupf/u-root,u-root/u-root,hugelgupf/u-root,u-root/u-root,u-root/u-root,hugelgupf/u-root