[3.10] ci: add GitHub token permissions (GH-92999) (#98161)

* ci: add GitHub token permissions (#92999)

(cherry picked from commit b96e20c)

* [3.10] ci: add GitHub token permissions (GH-92999).
(cherry picked from commit b96e20c)

Co-authored-by: Varun Sharma <[email protected]>

Co-authored-by: Varun Sharma <[email protected]>

Author: ezio-melotti

.github/workflows/build.yml

@@ -19,6 +19,9 @@ on:
     - 3.8
     - 3.7
 
+permissions:
+  contents: read
+
 jobs:
   check_source:
     name: 'Check for source changes'

.github/workflows/build_msi.yml

@@ -20,6 +20,9 @@ on:
     paths:
     - 'Tools/msi/**'
 
+permissions:
+  contents: read
+
 jobs:
   build_win32:
     name: 'Windows (x86) Installer'

.github/workflows/doc.yml

@@ -20,6 +20,9 @@ on:
     - 'Doc/**'
     - 'Misc/**'
 
+permissions:
+  contents: read
+
 jobs:
   build_doc:
     name: 'Docs'