Harden apt install step against CI stalls.

Author: gmartin82

.github/workflows/rpi_pico.yaml

@@ -30,8 +30,22 @@ jobs:
       - uses: jwlawson/actions-setup-cmake@v1.13
       - name: Install requirements
         run: |
-          sudo apt update
-          sudo apt install -y cmake gcc-arm-none-eabi libnewlib-arm-none-eabi build-essential g++ libstdc++-arm-none-eabi-newlib
+          sudo apt-get update \
+            -o Acquire::Retries=5 \
+            -o Acquire::http::Timeout=60 \
+            -o Acquire::https::Timeout=60
+
+          sudo apt-get install -y --no-install-recommends \
+            -o Acquire::Retries=5 \
+            -o Acquire::http::Timeout=60 \
+            -o Acquire::https::Timeout=60 \
+            cmake \
+            gcc-arm-none-eabi \
+            libnewlib-arm-none-eabi \
+            build-essential \
+            g++ \
+            libstdc++-arm-none-eabi-newlib
+        timeout-minutes: 20
 
       - name: Install Raspberry Pico SDK 
         run: |