CI: Revert "use empy 3.3.4"

.github/workflows/canard.yml

@@ -22,7 +22,7 @@ jobs:
         sudo dpkg --add-architecture i386
         sudo apt-get update
         sudo apt-get install gcc-multilib g++-multilib lcov ccache valgrind libgcc-s1:i386 libc6-dbg:i386
-        sudo pip install empy==3.3.4 pydronecan
+        sudo pip install empy pydronecan
     - name: Submodule update
       run: |
         git submodule update --init --recursive

.github/workflows/examples.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Install Dependencies
       run: |
         uname -a
-        sudo pip install empy==3.3.4 pydronecan pexpect
+        sudo pip install empy pydronecan pexpect
     - name: build SimpleNode
       working-directory: ${{github.workspace}}/examples/SimpleNode
       run: make

examples/README.md

@@ -13,7 +13,7 @@ and type 'make'
 
 You may need to install the following before building:
 ```
-  sudo pip install empy==3.3.4 pydronecan pexpect
+  sudo pip install empy pydronecan pexpect
 ```
 
 ## Running Examples