Restrict GitHub token permissions of CI workflows (crystal-lang#15087)

.github/workflows/aarch64.yml

@@ -2,6 +2,8 @@ name: AArch64 CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/docs.yml

@@ -5,6 +5,8 @@ on:
     branches:
       - master
 
+permissions: {}
+
 env:
   TRAVIS_OS_NAME: linux
 

.github/workflows/interpreter.yml

@@ -2,6 +2,8 @@ name: Interpreter Test
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/linux.yml

@@ -2,6 +2,8 @@ name: Linux CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/llvm.yml

@@ -2,6 +2,8 @@ name: LLVM CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/macos.yml

@@ -2,6 +2,8 @@ name: macOS CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/openssl.yml

@@ -2,6 +2,8 @@ name: OpenSSL CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/regex-engine.yml

@@ -2,6 +2,8 @@ name: Regex Engine CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/smoke.yml

@@ -31,6 +31,8 @@ name: Smoke tests
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/wasm32.yml

@@ -2,6 +2,8 @@ name: WebAssembly CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/win.yml

@@ -2,6 +2,8 @@ name: Windows CI
 
 on: [push, pull_request]
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

.github/workflows/win_build_portable.yml

@@ -10,6 +10,8 @@ on:
         required: true
         type: string
 
+permissions: {}
+
 jobs:
   build:
     runs-on: windows-2022