fix(ci): use 40Gb disk for 'almalinux-9-aarch64' RunsOn runner across aarch64 build workflows

The `image=almalinux-9-aarch64` RunsOn image defaults to a volume that's
too small for AlmaLinux cloud-image builds and runs out of space. Add
the explicit `volume=40g` selector everywhere that image is referenced
in the AlmaLinux-org `runs-on` expression:

  - .github/workflows/azure-build.yml
  - .github/workflows/gencloud-build.yml
  - .github/workflows/oci-build.yml
  - .github/workflows/opennebula-build.yml

All four files share the same conditional form for the AlmaLinux-org
build job's runner and now request the larger 40 GB volume
consistently.

Author: yuravk

.github/workflows/azure-build.yml

@@ -166,7 +166,7 @@ jobs:
     runs-on: >-
       ${{
         github.repository_owner == 'AlmaLinux' &&
-          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64', github.run_id)
+          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64/volume=40g', github.run_id)
         ||
         github.run_id
       }}

.github/workflows/gencloud-build.yml

@@ -167,7 +167,7 @@ jobs:
     runs-on: >-
       ${{
         github.repository_owner == 'AlmaLinux' &&
-          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64', github.run_id)
+          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64/volume=40g', github.run_id)
         ||
         github.run_id
       }}

.github/workflows/oci-build.yml

@@ -156,7 +156,7 @@ jobs:
     runs-on: >-
       ${{
         github.repository_owner == 'AlmaLinux' &&
-          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64', github.run_id)
+          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64/volume=40g', github.run_id)
         ||
         github.run_id
       }}

.github/workflows/opennebula-build.yml

@@ -166,7 +166,7 @@ jobs:
     runs-on: >-
       ${{
         github.repository_owner == 'AlmaLinux' &&
-          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64', github.run_id)
+          format('runs-on={0}/family=a1.metal/image=almalinux-9-aarch64/volume=40g', github.run_id)
         ||
         github.run_id
       }}