fix: add Gradle credentials step for CFS feed authentication

Writes GraphDeveloperExperiences_Public credentials to
~/.gradle/gradle.properties using System.AccessToken for
authentication against the Azure Artifacts CFS upstream feed.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: ramsessanchez

.azure-pipelines/daily-ci-build.yml

@@ -43,6 +43,12 @@ extends:
               - checkout: self
                 submodules: recursive
 
+              - script: |
+                  mkdir -p ~/.gradle
+                  echo "GraphDeveloperExperiences_PublicUsername=microsoftgraph" >> ~/.gradle/gradle.properties
+                  echo "GraphDeveloperExperiences_PublicPassword=$(System.AccessToken)" >> ~/.gradle/gradle.properties
+                displayName: Configure Gradle credentials for CFS feed
+
               - task: Gradle@4
                 displayName: Build and Test SDK
                 inputs: