Cover release/7.0 in our pipelines (#43483)

* Cover release/7.0 in our pipelines
* PR feedback: Remove release/5.0 mentions in our YAML

Author: dougbu

.azure/pipelines/helix-matrix.yml

@@ -11,8 +11,8 @@ schedules:
 - cron: "0 9 * * *"
   branches:
     include:
-    - release/5.0
     - release/6.0
+    - release/7.0
   always: false
 
 variables:

.azure/pipelines/quarantined-pr.yml

@@ -3,23 +3,23 @@
 #
 
 # Configure which branches trigger builds
-# We want to run quarantined tests on release/5.0 and main as well as on PRs
+# We want to run quarantined tests on release/6.0 and later as well as on PRs
 trigger:
   batch: true
   branches:
     include:
     - main
-    - release/5.0
     - release/6.0
+    - release/7.0
 
 # Run PR validation on branches that include Helix tests
 pr:
   autoCancel: true
   branches:
     include:
     - main
-    - release/5.0
     - release/6.0
+    - release/7.0
   paths:
     exclude:
     - .github/*

.github/dependabot.yml

@@ -62,4 +62,15 @@ updates:
     labels:
       - area-infrastructure
     target-branch: "release/6.0"
-   
+  - package-ecosystem: "gitsubmodule"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    allow:
+      - dependency-type: "all"
+    commit-message:
+      prefix: "[release/7.0] "
+      include: scope
+    labels:
+      - area-infrastructure
+    target-branch: "release/7.0"