Update GitHub workflows for PR

Author: andylibrian

.github/workflows/agent-container-pr.yml

@@ -8,6 +8,10 @@ on:
     branches:
       - 'main'
 
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/agent-git-pr.yml

@@ -8,6 +8,10 @@ on:
     branches:
       - 'main'
 
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/agent-kubviz-pr.yml

@@ -8,6 +8,10 @@ on:
     branches:
       - 'main'
 
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/client-pr.yml

@@ -8,6 +8,10 @@ on:
     branches:
       - 'main'
 
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/migration-pr.yml

@@ -8,6 +8,10 @@ on:
     branches:
       - 'main'
 
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/otel-collector-pr.yml

@@ -8,6 +8,10 @@ on:
     branches:
       - 'main'
 
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build:
     runs-on: ubuntu-latest