Use 0.01 for atom displacement default in phonon calcs (#1209)

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Guide](https://quantum-accelerators.github.io/quacc/dev/contributing.html).
Don't lie! 😉
- [ ] My PR is on a custom branch and is _not_ named `main`.
- [ ] I have added relevant unit tests. Note: Your PR will likely not be
merged without proper tests.

src/quacc/recipes/common/phonons.py

@@ -30,7 +30,7 @@ def phonon_flow(
  atoms: Atoms,
  static_job: Job,
  supercell_matrix: ArrayLike = ((2, 0, 0), (0, 2, 0), (0, 0, 2)),
- atom_disp: float = 0.015,
+ atom_disp: float = 0.01,
  t_step: float = 10,
  t_min: float = 0,
  t_max: float = 1000,

src/quacc/recipes/emt/phonons.py

@@ -21,7 +21,7 @@
 def phonon_flow(
  atoms: Atoms,
  supercell_matrix: ArrayLike = ((2, 0, 0), (0, 2, 0), (0, 0, 2)),
- atom_disp: float = 0.015,
+ atom_disp: float = 0.01,
  t_step: float = 10,
  t_min: float = 0,
  t_max: float = 1000,