Fix LINUX_BINARY_PLATFORM checking (#2293)

Also check for "aarch64"

Author: meteorcloudy

buildkite/bazelci.py

@@ -474,7 +474,7 @@
 # In order to test that "the one Linux binary" that we build for our official releases actually
 # works on all Linux distributions that we test on, we use the Linux binary built on our official
 # release platform for all Linux downstream tests.
-LINUX_BINARY_PLATFORM = "rockylinux8_arm64" if platform_module.machine() == "arm64" else "rockylinux8"
+LINUX_BINARY_PLATFORM = "rockylinux8_arm64" if platform_module.machine() in ["arm64", "aarch64"] else "rockylinux8"
 
 XCODE_VERSION_REGEX = re.compile(r"^\d+\.\d+(\.\d+)?$")
 XCODE_VERSION_OVERRIDES = {"10.2.1": "10.3", "11.2": "11.2.1", "11.3": "11.3.1"}