ci: remove ubuntu 20.04 runners (#5545)

* ci: remove ubuntu 20.04 runners

* chore: update ec2-github-runner action as author suggests

* fix: use latest ubuntu image for fuzz test

* Update action.yml

* Update action.yml

---------

Co-authored-by: shuiyisong <113876041+shuiyisong@users.noreply.github.com>
Co-authored-by: liyang <daviderli614@gmail.com>

docker/buildx/ubuntu/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04 as builder
+FROM ubuntu:22.04 as builder
 
 ARG CARGO_PROFILE
 ARG FEATURES

docker/ci/ubuntu/Dockerfile.fuzztests

@@ -1,4 +1,4 @@
-FROM ubuntu:22.04
+FROM ubuntu:latest
 
 # The binary name of GreptimeDB executable.
 # Defaults to "greptime", but sometimes in other projects it might be different.

docker/dev-builder/ubuntu/Dockerfile-20.04

@@ -41,7 +41,7 @@ RUN mv protoc3/include/* /usr/local/include/
 # and the repositories are pulled from trusted sources (still us, of course). Doing so does not violate the intention
 # of the Git's addition to the "safe.directory" at the first place (see the commit message here:
 # https://github.com/git/git/commit/8959555cee7ec045958f9b6dd62e541affb7e7d9).
-# There's also another solution to this, that we add the desired submodules to the safe directory, instead of using
+# There's also another solution to this, that we add the desired submodules to the safe directory, instead of using 
 # wildcard here. However, that requires the git's config files and the submodules all owned by the very same user.
 # It's troublesome to do this since the dev build runs in Docker, which is under user "root"; while outside the Docker,
 # it can be a different user that have prepared the submodules.