Merge branch 'elmath-master-patch-78290' into 'master'

minor fix (arbor version number)

See merge request technical-coordination/project-internal/devops/platform/ebrains-spack-builds!210

packages/arbor/package.py

@@ -17,7 +17,7 @@ class Arbor(CMakePackage, CudaPackage):
 
     version("master", branch="master", submodules=True)
     version(
-        "0.8",
+        "0.8.1",
         sha256="caebf96676ace6a9c50436541c420ca4bb53f0639dcab825de6fa370aacf6baa",
         url="https://github.com/arbor-sim/arbor/releases/download/v0.8.1/arbor-v0.8.1-full.tar.gz",
     )