(?m)applies the following effective flags to the remainder of the pattern: m m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
^start of line
\s*any whitespace character, repeated any number of times
"dependencies":the literal text "dependencies": (case sensitive) \s*any whitespace character, repeated any number of times
{the literal { (12310 / 1738 / 7B16)
\s*any whitespace character, repeated any number of times
$end of line