Update apt sources before installing dependencies (source-academy#2788)

Ensures that CI dependencies can be installed, fixing workflow errors
once sources get outdated.

Author: RichDom2185

.github/workflows/build-development.yml

@@ -13,6 +13,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Install dependencies (apt)
         run: |
+          sudo apt-get update && \
           sudo apt-get install -y --no-install-recommends \
           libxi-dev libgl1-mesa-dev
       - name: Setup node

.github/workflows/ci.yml

@@ -22,6 +22,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Install dependencies (apt)
         run: |
+          sudo apt-get update && \
           sudo apt-get install -y --no-install-recommends \
           libxi-dev libgl1-mesa-dev
       - name: Setup node