Update decrypt-secrets.sh

decrypt-secrets.sh

 #!/bin/sh
 
 # import the PGP key for the right environment
-if [ $PICA_ENVIRONMENT -eq "TEST" ];
+if [ "$PICA_ENVIRONMENT" = "TEST" ];
 then
     echo "$PRIVATE_GPG_KEY_TEST" > /tmp/pgp-key
-elif [ $PICA_ENVIRONMENT -eq "PRODUCTION" ];
+elif [ "$PICA_ENVIRONMENT" = "PRODUCTION" ];
 then
     echo "$PRIVATE_GPG_KEY_PRODUCTION" > /tmp/pgp-key
 else