Update dependabot.yml

Author: Harmanpreet-Microsoft

.github/dependabot.yml

@@ -12,7 +12,7 @@ updates:
     commit-message:
       prefix: "build"
     target-branch: "dependabotchanges"
-    open-pull-requests-limit: 10
+    open-pull-requests-limit: 100
 
   - package-ecosystem: "pip" # for backend dependencies
     directory: "/"   
@@ -21,4 +21,4 @@ updates:
     commit-message:
       prefix: "build"
     target-branch: "dependabotchanges"
-    open-pull-requests-limit: 10
+    open-pull-requests-limit: 100