chore: Update container version to g7e451ea

Update container version to g7e451ea that includes gstreamer
dependencies.

Signed-off-by: Matias Ezequiel Vara Larsen <mvaralar@redhat.com>

Author: MatiasVara

.buildkite/autogenerate_pipeline.py

@@ -60,7 +60,7 @@
 
 # This represents the version of the rust-vmm-container used
 # for running the tests.
-CONTAINER_VERSION = "g260df6e"
+CONTAINER_VERSION = "g7e451ea"
 # The suffix suggests that the dev image with `v{N}-riscv` tag is not to be
 # confused with real `riscv64` image (it's actually a `x86_64` image with
 # `qemu-system-riscv64` installed), since AWS yet has `riscv64` machines