chore(ci): remove broken Microsoft apt sources before apt-get update

GitHub-hosted Ubuntu 24.04 runners include Microsoft package repos
(azure-cli, packages.microsoft.com/ubuntu/24.04/prod) in their default
apt sources. These repos intermittently return 403 Forbidden, causing
apt-get update to fail with exit code 100 even though none of our
dependencies come from those repos.

Remove the Microsoft source list files and their signing keys before
running apt-get update so transient Microsoft CDN outages don't break
unrelated CI jobs.

Co-authored-by: Will Pfleger <pfleger.will@gmail.com>
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>

.github/workflows/ci.yml

@@ -114,6 +114,13 @@ jobs:
         with:
           workspaces: desktop/src-tauri
           save-if: ${{ github.event_name != 'pull_request' }}
+      - name: Remove broken Microsoft apt sources
+        run: |
+          sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list \
+                     /etc/apt/sources.list.d/azure-cli.list \
+                     /etc/apt/sources.list.d/packages.microsoft.com.list
+          sudo rm -f /etc/apt/trusted.gpg.d/microsoft.gpg \
+                     /etc/apt/trusted.gpg.d/microsoft-prod.gpg
       - name: Install Tauri dependencies (Linux)
         env:
           DEBIAN_FRONTEND: noninteractive

.github/workflows/release.yml

@@ -463,6 +463,13 @@ jobs:
           workspaces: desktop/src-tauri
           lookup-only: true
 
+      - name: Remove broken Microsoft apt sources
+        run: |
+          sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list \
+                     /etc/apt/sources.list.d/azure-cli.list \
+                     /etc/apt/sources.list.d/packages.microsoft.com.list
+          sudo rm -f /etc/apt/trusted.gpg.d/microsoft.gpg \
+                     /etc/apt/trusted.gpg.d/microsoft-prod.gpg
       - name: Install Tauri dependencies (Linux)
         env:
           DEBIAN_FRONTEND: noninteractive