Update to public Ubuntu 24.04 ARM runner

Signed-off-by: Spencer Wilson <[email protected]>

.github/actionlint.yaml

@@ -1,14 +1,7 @@
-# Labels of self-hosted runner in array of strings.
-
-# NB. oqs-arm64 is not self-hosted but this configuration
-#     is required for liboqs to lint correctly with actionlint v1.7.1
-
-self-hosted-runner:
-  # Labels of self-hosted runner in array of string
-  labels:
-    - oqs-arm64
 # Configuration variables in array of strings defined in your repository or organization
 config-variables:
   # - DEFAULT_RUNNER
   # - JOB_NAME
   # - ENVIRONMENT_STAGE
+
+# An empty array means no variable is allowed.

.github/workflows/linux.yml

@@ -13,7 +13,7 @@ jobs:
       matrix:
         include:
           - name: arm64
-            runner: oqs-arm64
+            runner: ubuntu-24.04-arm
             container: openquantumsafe/ci-ubuntu-latest:latest
             PYTEST_ARGS: --maxprocesses=10 --ignore=tests/test_kat_all.py
             CMAKE_ARGS: -DOQS_ENABLE_SIG_STFL_LMS=ON -DOQS_ENABLE_SIG_STFL_XMSS=ON -DOQS_HAZARDOUS_EXPERIMENTAL_ENABLE_SIG_STFL_KEY_SIG_GEN=ON