upgrade cargo dependencies

src/misc.rs

@@ -1,7 +1,6 @@
 use base64::{Engine as _, engine::general_purpose};
 use egui_plot::{Line, PlotPoint, PlotPoints, Points};
 use emath::Pos2;
-use getrandom::getrandom;
 use itertools::Itertools;
 use parsing::FlatExWrapper;
 
@@ -195,16 +194,6 @@ pub fn hashed_storage_read(data: &str) -> Option<(HashBytes, Vec<u8>)> {
     Some((hash, data_bytes.to_vec()))
 }
 
-/// Creates and returns random u64
-pub fn random_u64() -> Result<u64, getrandom::Error> {
-    // Buffer of 8 `u8`s that are later merged into one u64
-    let mut buf = [0u8; 8];
-    // Populate buffer with random values
-    getrandom(&mut buf)?;
-    // Merge buffer into u64
-    Ok(u64::from_be_bytes(buf))
-}
-
 include!(concat!(env!("OUT_DIR"), "/valid_chars.rs"));
 
 pub fn is_valid_char(c: char) -> bool {