Start using gitlab hosted runners for ARM

Those runners have proper auto-scaling and are able to
out-perform the self-hosted one that we had.

.github/workflows/build-binaries.yml

@@ -16,7 +16,7 @@ jobs:
             architecture: amd64
           - os: macOS-latest
             architecture: amd64
-          - os: self-hosted
+          - os: ubuntu-arm64-2-core
             architecture: arm64
     runs-on: ${{ matrix.os }}
 
@@ -30,7 +30,7 @@ jobs:
         id: tag
         run: echo "TAG=$(git describe --tags)" >> $GITHUB_ENV
 
-      - name: Install dependencies (Ubuntu or self-hosted)
+      - name: Install dependencies (Linux)
         if: runner.os == 'Linux'
         run: sudo apt-get update -qq && sudo apt-get install -y upx-ucl build-essential cargo git golang libjemalloc-dev libjemalloc2 -y
 

.github/workflows/juno-test.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         go: [ '1.22.2' ]
-        os: [ ubuntu-latest, macos-latest, self-hosted-linux-arm64]
+        os: [ ubuntu-latest, macos-latest, ubuntu-arm64-2-core]
     runs-on: ${{ matrix.os }}
     env:
       VM_DEBUG: true
@@ -35,7 +35,7 @@ jobs:
       - name: Install deps
         run: make install-deps
 
-      - name: Install Jemalloc (Ubuntu or self-hosted)
+      - name: Install Jemalloc (Linux)
         if: runner.os == 'Linux'
         run: sudo apt-get update -qq && sudo apt-get install -y libjemalloc-dev libjemalloc2 -y