Fix package install in CI

shoutout to github for shipping broken OS images

.github/workflows/build.yml

@@ -7,19 +7,21 @@ on:
       - '**.[ch]'
       - '**.cpp'
       - '**/CMakeLists.txt'
+      - 'util/ci/**'
       - '.github/workflows/**.yml'
   pull_request:
     paths:
       - '**.[ch]'
       - '**.cpp'
       - '**/CMakeLists.txt'
+      - 'util/ci/**'
       - '.github/workflows/**.yml'
 
 jobs:
   gcc:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Install deps
         run: |
           source util/ci/script.sh
@@ -41,7 +43,7 @@ jobs:
   clang:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Install deps
         run: |
           source util/ci/script.sh

util/ci/script.sh

@@ -4,7 +4,8 @@ install_linux_deps() {
 	local pkgs=(cmake libgd-dev libsqlite3-dev libleveldb-dev libpq-dev libhiredis-dev libzstd-dev)
 
 	sudo apt-get update
-	sudo apt-get install -y --no-install-recommends ${pkgs[@]} "$@"
+	sudo apt-get remove -y 'libgd3' nginx || : # ????
+	sudo apt-get install -y --no-install-recommends "${pkgs[@]}" "$@"
 }
 
 run_build() {