Update dependency Juju 2 to v2.9.45 (#237)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -83,19 +83,19 @@ jobs:
           - plugins-integration
           - tls-integration
         agent-versions:
-          - "2.9.44"  # renovate: latest juju 2
+          - "2.9.45"  # renovate: latest juju 2
           - "3.1.5"  # renovate: latest juju 3
         free-disk-space:
           - false
         include:
           - tox-environments: database-relation-integration
-            agent-versions: "2.9.44"  # renovate: latest juju 2
+            agent-versions: "2.9.45"  # renovate: latest juju 2
             free-disk-space: true
           - tox-environments: database-relation-integration
             agent-versions: "3.1.5"  # renovate: latest juju 3
             free-disk-space: true
           - tox-environments: db-admin-relation-integration
-            agent-versions: "2.9.44"  # renovate: latest juju 2
+            agent-versions: "2.9.45"  # renovate: latest juju 2
             free-disk-space: true
     name: ${{ matrix.tox-environments }} | ${{ matrix.agent-versions }}
     needs: