[gh-actions] Add permissions to workflows as suggested by Github

.github/workflows/build_htdocs.yml

@@ -1,4 +1,6 @@
 name: Build htdocs
+permissions:
+  contents: write
 
 on:
   push:

.github/workflows/codeql-analysis.yml

@@ -1,4 +1,6 @@
 name: "CodeQL"
+permissions:
+  contents: read
 
 on:
   push:

.github/workflows/freebsd.yml

@@ -1,4 +1,6 @@
 name: FreeBSD
+permissions:
+  contents: read
 
 on:
   push:

.github/workflows/gh-pages.yml

@@ -1,4 +1,6 @@
 name: build and deploy mkdocs to github pages
+permissions:
+  contents: write
 on:
   push:
     branches:

.github/workflows/macos.yml

@@ -1,4 +1,6 @@
 name: macOS
+permissions:
+  contents: read
 
 on:
   push:

.github/workflows/macos_12.yml

@@ -1,4 +1,6 @@
 name: macOS 12
+permissions:
+  contents: read
 
 on:
   workflow_dispatch:

.github/workflows/ubuntu.yml

@@ -1,4 +1,6 @@
 name: Ubuntu
+permissions:
+  contents: read
 
 on:
   push:

.github/workflows/webui_lint.yml

@@ -1,4 +1,6 @@
 name: Web UI Lint
+permissions:
+  contents: read
 
 on:
   push: