Use a functional token for rabbitmq/server-packages event dispatch

(cherry picked from commit 95332dd)

Author: michaelklishin

.github/workflows/release-4.0.x-alphas.yaml

@@ -20,7 +20,7 @@ jobs:
       - name: Trigger a 4.0.x alpha build in ${{ env.DEV_WORKFLOW_REPOSITORY }}
         uses: peter-evans/repository-dispatch@v3
         with:
-          token: ${{ secrets.RABBITMQCI_BOT_TOKEN }}
+          token: ${{ secrets.MK_RELEASE_AUTOMATION_TOKEN }}
           repository: ${{ env.DEV_WORKFLOW_REPOSITORY }}
           event-type: "new_4.0.x_alpha"
           client-payload: |-

.github/workflows/release-4.1.x-alphas.yaml

@@ -20,7 +20,7 @@ jobs:
       - name: Trigger a 4.0.x alpha build in ${{ env.DEV_WORKFLOW_REPOSITORY }}
         uses: peter-evans/repository-dispatch@v3
         with:
-          token: ${{ secrets.RABBITMQCI_BOT_TOKEN }}
+          token: ${{ secrets.MK_RELEASE_AUTOMATION_TOKEN }}
           repository: ${{ env.DEV_WORKFLOW_REPOSITORY }}
           event-type: "new_4.1.x_alpha"
           client-payload: |-

.github/workflows/release-4.2.x-alphas.yaml

@@ -21,7 +21,7 @@ jobs:
       - name: Trigger a 4.0.x alpha build in ${{ env.DEV_WORKFLOW_REPOSITORY }}
         uses: peter-evans/repository-dispatch@v3
         with:
-          token: ${{ secrets.RABBITMQCI_BOT_TOKEN }}
+          token: ${{ secrets.MK_RELEASE_AUTOMATION_TOKEN }}
           repository: ${{ env.DEV_WORKFLOW_REPOSITORY }}
           event-type: "new_4.2.x_alpha"
           client-payload: |-