Move protobuf action to default linux runner (#43085)

Release Notes:

- N/A

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

.github/workflows/run_tests.yml

@@ -493,7 +493,10 @@ jobs:
     needs:
     - orchestrate
     if: needs.orchestrate.outputs.run_tests == 'true'
-    runs-on: self-mini-macos
+    runs-on: namespace-profile-16x32-ubuntu-2204
+    env:
+      GIT_AUTHOR_NAME: Protobuf Action
+      GIT_AUTHOR_EMAIL: ci@zed.dev
     steps:
     - name: steps::checkout_repo
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683

tooling/xtask/src/tasks/workflows/run_tests.rs

@@ -363,7 +363,9 @@ pub(crate) fn check_postgres_and_protobuf_migrations() -> NamedJob {
 
     named::job(
         release_job(&[])
-            .runs_on(runners::MAC_DEFAULT)
+            .runs_on(runners::LINUX_DEFAULT)
+            .add_env(("GIT_AUTHOR_NAME", "Protobuf Action"))
+            .add_env(("GIT_AUTHOR_EMAIL", "ci@zed.dev"))
             .add_step(steps::checkout_repo().with(("fetch-depth", 0))) // fetch full history
             .add_step(remove_untracked_files())
             .add_step(ensure_fresh_merge())