Don't panic when version cannot be parsed

I typod a version and noticed that zigup aborted. This might be just a tiny bit nicer Before ``` ❯ ./zig-out/bin/zigup 0.1.00 install directory '/Users/g/.local/share/zigup' mkdir -p '/Users/g/.local/share/zigup' thread 38496615 panic: invalid version '0.1.00' Unable to dump stack trace: debug info stripped Abort trap: 6 ``` After ``` ❯ ./zig-out/bin/zigup 0.1.00 install directory '/Users/g/.local/share/zigup' mkdir -p '/Users/g/.local/share/zigup' error: InvalidVersion ```