[MISC] Remove Juju 3.5 from CI (#544)

Author: sinclert-canonical

.github/workflows/ci.yaml

@@ -68,22 +68,16 @@ jobs:
           - agent: 2.9.51  # renovate: juju-agent-pin-minor
             libjuju: ^2
             allure_on_amd64: false
-          - agent: 3.5.4  # renovate: juju-agent-pin-minor
+          - agent: 3.6.1  # renovate: juju-agent-pin-minor
             allure_on_amd64: true
-          - snap_channel: 3.6/stable
-            allure_on_amd64: false
         architecture:
           - amd64
         include:
           - juju:
-              agent: 3.5.4  # renovate: juju-agent-pin-minor
+              agent: 3.6.1  # renovate: juju-agent-pin-minor
               allure_on_amd64: true
             architecture: arm64
-          - juju:
-              snap_channel: 3.6/stable
-              allure_on_amd64: false
-            architecture: arm64
-    name: Integration | ${{ matrix.juju.agent || matrix.juju.snap_channel }} | ${{ matrix.architecture }}
+    name: Integration | ${{ matrix.juju.agent }} | ${{ matrix.architecture }}
     needs:
       - lint
       - unit-test
@@ -95,7 +89,6 @@ jobs:
       cloud: microk8s
       microk8s-snap-channel: 1.31-strict/stable  # renovate: latest microk8s
       juju-agent-version: ${{ matrix.juju.agent }}
-      juju-snap-channel: ${{ matrix.juju.snap_channel }}
       libjuju-version-constraint: ${{ matrix.juju.libjuju }}
       _beta_allure_report: ${{ matrix.juju.allure_on_amd64 && matrix.architecture == 'amd64' }}
     secrets: