Add libltdl-dev to workflows

Author: arkottke

.github/workflows/example-tests.yml

@@ -33,6 +33,7 @@ jobs:
             autoconf-archive \
             automake \
             libtool \
+            libltdl-dev \
             pkg-config \
             python3
 

.github/workflows/release.yml

@@ -36,7 +36,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y ninja-build libgl1-mesa-dev libxkbcommon-dev libxcb-cursor0 \
             "^libxcb.*-dev" libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev \
-            libxkbcommon-x11-dev libegl1-mesa-dev autoconf autoconf-archive automake libtool pkg-config
+            libxkbcommon-x11-dev libegl1-mesa-dev autoconf autoconf-archive automake libtool libltdl-dev pkg-config
 
       - name: Install Dependencies (macOS)
         if: runner.os == 'macOS'