docs: update example

I believe GitHub changed this somewhere, though I don't have a
link handy.

Author: EricCrosson

README.md

@@ -95,6 +95,9 @@ on:
       - "[0-9]+.[0-9]+.x"
       - "[0-9]+.x"
 
+permissions:
+  contents: write
+
 jobs:
   release:
     uses: semantic-release-action/rust/.github/workflows/release-binary.yml@v5
@@ -237,6 +240,9 @@ on:
       - "[0-9]+.[0-9]+.x"
       - "[0-9]+.x"
 
+permissions:
+  contents: write
+
 jobs:
   release:
     uses: semantic-release-action/rust/.github/workflows/release-library.yml@v5