This adds pre-built library for aarch64 linux, will help improve the
install speed and avoid building environment issues at customer side.
@apolcyn @jtattermusch Can you help build and push the new rake compiler
image?
Will update the tag and hash after the image is available
Manually tested locally:
```
uname -a
Linux u20 5.15.49-linuxkit #1 SMP PREEMPT Tue Sep 13 07:51:32 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux
```
```
time gem install /work/ruby/grpc/pkg/grpc-1.56.0.dev-aarch64-linux.gem
Successfully installed grpc-1.56.0.dev-aarch64-linux
Parsing documentation for grpc-1.56.0.dev-aarch64-linux
Installing ri documentation for grpc-1.56.0.dev-aarch64-linux
Done installing documentation for grpc after 0 seconds
1 gem installed
real 0m22.794s
user 0m17.268s
sys 0m5.156s
```
```
ruby greeter_server.rb &
[1] 319
ruby greeter_client.rb
"Greeting: Hello world"
```
Fixes:
https://github.com/grpc/grpc/issues/31855https://github.com/grpc/grpc/issues/29489
059144abd6