Add explicit permissions to workflows for security

Co-authored-by: lippytm <65956507+lippytm@users.noreply.github.com>

Author: Copilot

.github/workflows/blank.yml

@@ -31,6 +31,8 @@ jobs:
   build:
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
@@ -63,6 +65,8 @@ jobs:
   # Job to check status of connected repositories
   check-connected-repos:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     strategy:
       matrix:
         repo: 

.github/workflows/cross-repo-sync.yml

@@ -16,6 +16,8 @@ on:
 jobs:
   notify-connected-repos:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     if: github.event_name == 'workflow_dispatch' && github.event.inputs.notify_all == 'true'
     strategy:
       matrix:
@@ -44,6 +46,8 @@ jobs:
 
   display-repo-connections:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
       - name: Display Connected Repository Network
         run: |