Limit access for github actions

    * .github/workflows/fuzz.yml:
    * .github/workflows/linux.yml:
    * .github/workflows/macosx.yml:
    * .github/workflows/windows.yml:

Author: jwillemsen

.github/workflows/fuzz.yml

@@ -11,6 +11,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 env:
   DOC_ROOT: ${{ github.workspace }}/ACE
   ACE_ROOT: ${{ github.workspace }}/ACE/ACE

.github/workflows/linux.yml

@@ -11,6 +11,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 jobs:
   build:
     strategy:

.github/workflows/macosx.yml

@@ -11,6 +11,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 jobs:
   build:
     strategy:

.github/workflows/windows.yml

@@ -11,6 +11,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 jobs:
   build:
     strategy: