ci: migrate to runs-on for runners

Signed-off-by: Weston Steimel <author@code.w.steimel.me.uk>

Author: westonsteimel

.github/runs-on.yml

@@ -0,0 +1,4 @@
+# runs-on.com runner configuration
+
+# defer to the https://github.com/anchore/workflows repository for private runner configs
+_extends: workflows

.github/workflows/allocate.yaml

@@ -14,7 +14,7 @@ permissions:
 jobs:
   allocate-security-identifiers:
     name: "Allocate Security Identfiers"
-    runs-on: ubuntu-latest
+    runs-on: runs-on: runs-on=${{ github.run_id }}/runner=medium-arm
     container:
       image: python:3.13-alpine
     permissions:

.github/workflows/validations.yaml

@@ -14,7 +14,7 @@ permissions:
 jobs:
   validate-schema:
     name: "Validate Schema"
-    runs-on: ubuntu-latest
+    runs-on: runs-on: runs-on=${{ github.run_id }}/runner=small-arm
     container:
       image: python:3.13-alpine
     permissions: