ci: Switch to Namespace (#35835)

Follow-up to:
- https://github.com/zed-industries/zed/pull/35826

Release Notes:

- N/A

.github/actionlint.yml

@@ -13,22 +13,17 @@ self-hosted-runner:
     - windows-2025-16
     - windows-2025-32
     - windows-2025-64
-    # Buildjet Ubuntu 20.04 - AMD x86_64
-    - buildjet-2vcpu-ubuntu-2004
-    - buildjet-4vcpu-ubuntu-2004
-    - buildjet-8vcpu-ubuntu-2004
-    - buildjet-16vcpu-ubuntu-2004
-    - buildjet-32vcpu-ubuntu-2004
-    # Buildjet Ubuntu 22.04 - AMD x86_64
-    - buildjet-2vcpu-ubuntu-2204
-    - buildjet-4vcpu-ubuntu-2204
-    - buildjet-8vcpu-ubuntu-2204
-    - buildjet-16vcpu-ubuntu-2204
-    - buildjet-32vcpu-ubuntu-2204
-    # Buildjet Ubuntu 22.04 - Graviton aarch64
-    - buildjet-8vcpu-ubuntu-2204-arm
-    - buildjet-16vcpu-ubuntu-2204-arm
-    - buildjet-32vcpu-ubuntu-2204-arm
+    # Namespace Ubuntu 20.04 (Release builds)
+    - namespace-profile-16x32-ubuntu-2004
+    - namespace-profile-32x64-ubuntu-2004
+    - namespace-profile-16x32-ubuntu-2004-arm
+    - namespace-profile-32x64-ubuntu-2004-arm
+    # Namespace Ubuntu 22.04 (Everything else)
+    - namespace-profile-2x4-ubuntu-2204
+    - namespace-profile-4x8-ubuntu-2204
+    - namespace-profile-8x16-ubuntu-2204
+    - namespace-profile-16x32-ubuntu-2204
+    - namespace-profile-32x64-ubuntu-2204
     # Self Hosted Runners
     - self-mini-macos
     - self-32vcpu-windows-2022