Update to public Ubuntu 24.04 ARM runner [full tests]

Signed-off-by: Spencer Wilson <spencer.wilson@uwaterloo.ca>

.github/actionlint.yaml

@@ -1,12 +1,12 @@
 # Labels of self-hosted runner in array of strings.
 
-# NB. oqs-arm64 is not self-hosted but this configuration
+# NB. ubuntu-24.04-arm 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
+    - ubuntu-24.04-arm
 # Configuration variables in array of strings defined in your repository or organization
 config-variables:
   # - DEFAULT_RUNNER

.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