Add source to each step

Author: moxon6

.github/workflows/build-dependencies.yml

@@ -14,6 +14,7 @@ jobs:
 
     - name: Build libgmp wasm
       run: |
+        source ./emsdk/emsdk_env.sh
         mkdir -p ${HOME}/opt
         wget https://gmplib.org/download/gmp/gmp-6.1.2.tar.xz
         tar xvf gmp-6.1.2.tar.xz
@@ -28,6 +29,7 @@ jobs:
     
     - name: Build libcob wasm
       run: |
+        source ./emsdk/emsdk_env.sh
         mkdir -p ${HOME}/opt
         wget http://sourceforge.net/projects/open-cobol/files/gnu-cobol/3.0/gnucobol-3.0-rc1.tar.gz
         tar xvf gnucobol-3.0-rc1.tar.gz