Add workflow permissions

Author: CorruptComputer

.github/workflows/dotnetcore.yml

@@ -13,6 +13,8 @@ jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
       # Setup
       - name: Checkout Repo
@@ -30,6 +32,8 @@ jobs:
   build-linux:
     name: Build Linux
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
       # Setup
       - name: Checkout repo
@@ -53,6 +57,8 @@ jobs:
   build-windows:
     name: Build Windows
     runs-on: windows-latest
+    permissions:
+      contents: read
     steps:
       # Setup
       - name: Checkout repo