🔧 fix: add missing checkout steps to approval workflows

  Add checkout actions to sig_approval, rfc_approval, and pipeline_proposals workflows
  to resolve MODULE_NOT_FOUND errors when requiring approval.js

Author: kenibrewer

.github/workflows/pipeline_proposals.yml

@@ -13,6 +13,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       - name: Handle pipeline proposal approval logic
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea #v7.0.1
         with:

.github/workflows/rfc_approval.yml

@@ -13,6 +13,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       - name: Handle RFC approval logic
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea #v7.0.1
         with:

.github/workflows/sig_approval.yml

@@ -13,6 +13,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       - name: Handle SIG approval logic
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea #v7.0.1
         with: