move env var declaration

Author: kernelsam

.github/workflows/java-windows-snippets.yaml

@@ -32,9 +32,8 @@ jobs:
           senzingsdk-repository-path: ${{ secrets.SENZING_WIN_BETA_REPOSITORY }}
 
       - name: build with Maven
-        env:
-          SENZING_DIR: "$Env:USERPROFILE\Senzing\er"
         run: |
+          $Env:SENZING_DIR = "$Env:USERPROFILE\Senzing\er"
           cd "${Env:GITHUB_WORKSPACE}/java"
           mvn clean install