Downgrade Console to 0.15.11

[komyg]

Downgrade console dependency to fix build error:

error[E0053]: method `bar_color` has an incompatible type for trait
 --> nova_cli/src/theme.rs:7:44
  |
7 |     fn bar_color(&self, _: &ThemeState) -> Style {
  |                                            ^^^^^ expected `console::utils::Style`, found `console::Style`
  |
  = note: expected signature `fn(&DefaultTheme, &ThemeState) -> console::utils::Style`
             found signature `fn(&DefaultTheme, &ThemeState) -> console::Style`
help: change the output type to match the trait
  |
7 |     fn bar_color(&self, _: &ThemeState) -> console::utils::Style {
  |                                            ++++++++++++++++

error[E0053]: method `state_symbol_color` has an incompatible type for trait
  --> nova_cli/src/theme.rs:11:53
   |
11 |     fn state_symbol_color(&self, _: &ThemeState) -> Style {
   |                                                     ^^^^^ expected `console::utils::Style`, found `console::Style`
   |
   = note: expected signature `fn(&DefaultTheme, &ThemeState) -> console::utils::Style`
              found signature `fn(&DefaultTheme, &ThemeState) -> console::Style`
help: change the output type to match the trait
   |
11 |     fn state_symbol_color(&self, _: &ThemeState) -> console::utils::Style {
   |                                                     ++++++++++++++++

error[E0053]: method `input_style` has an incompatible type for trait
  --> nova_cli/src/theme.rs:15:46
   |
15 |     fn input_style(&self, _: &ThemeState) -> Style {
   |                                              ^^^^^ expected `console::utils::Style`, found `console::Style`
   |
   = note: expected signature `fn(&DefaultTheme, &ThemeState) -> console::utils::Style`
              found signature `fn(&DefaultTheme, &ThemeState) -> console::Style`
help: change the output type to match the trait
   |
15 |     fn input_style(&self, _: &ThemeState) -> console::utils::Style {
   |                                              ++++++++++++++++