Update deploy-zksync.sh

[Kewe63]

Some minor fixes....

-I added quotes in conditions like "$2", this is
It prevents us from getting an error when the variable content is empty.

• I added quotes in commands like rm -rf"./artifacts-zk" and rm -rf "./cache-zk", this prevents us from getting errors if the file or directory name contains spaces.
• if [[ "$skipped Compile" == 0 && "$1" ]]; then and if [[ "$skipped Compile" == 1 && "$2" ]]; I added spaces in if conditions like then and quoted $1 and $2, which prevents us from getting an error if the variables are empty.
• I added quotes in expressions such as script="$1" and script="$2" to assign a value to the script variable.
• For checking a non-null variable [[! I added quotes using -z "$script"]].

I thought these changes would make the code run more reliably and consistently. If I make a mistake, please let me know.