Merge pull request #3774 from sashashura/patch-1

GitHub Workflows security hardening

.github/workflows/dynamic_arch.yml

@@ -2,6 +2,9 @@ name: continuous build
 
 on: [push, pull_request]
 
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
 jobs:
   build:
     runs-on: ${{ matrix.os }}

.github/workflows/mips64.yml

@@ -2,6 +2,9 @@ name: mips64 qemu test
 
 on: [push, pull_request]
 
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
 jobs:
   TEST:
     runs-on: ubuntu-latest

.github/workflows/nightly-Homebrew-build.yml

@@ -17,6 +17,10 @@ on:
 # it only makes sense to test if this file has been changed
 
 name: Nightly-Homebrew-Build
+
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
 jobs:
   build-OpenBLAS-with-Homebrew:
     runs-on: macos-latest