* restore global permissions to be only "contents: read" (#446)

as suggested by best practices
* disable "contents: write" for tpip workflow
  until git push gets resurrected

Signed-off-by: Jens Reinecke <jens.reinecke@arm.com>

Author: jreineckearm

.github/workflows/ci.yml

@@ -22,7 +22,6 @@ concurrency:
 
 permissions:
   contents: read
-  packages: read
 
 jobs:
   build:
@@ -37,6 +36,8 @@ jobs:
           - platform: macos-14
             target: darwin
     runs-on: ${{ matrix.platform }}
+    permissions:
+      packages: read
     name: 'Build and test (${{ matrix.target }})'
 
     steps:
@@ -164,6 +165,8 @@ jobs:
           - linux-x64
           - linux-arm64
           - darwin-arm64
+    permissions:
+      packages: read
     steps:
       - name: Harden the runner (Audit all outbound calls)
         uses: step-security/harden-runner@ec9f2d5744a09debf3a187a3f4f675c53b671911 # v2.13.0

.github/workflows/tpip.yml

@@ -16,10 +16,13 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 jobs:
   report:
     permissions:
-      contents: write  # for Git to git push
+      # contents: write  # for Git to git push # disabled until resurrecting direct git push
       packages: read
 
     name: Generate report