chore: Add consts to allowed spellcheck words (#1709)

### Description

- Add consts to allowed spellcheck words. (Updated Spellcheck started
complaining about that.)

Author: Pijukatel

typos.toml

@@ -24,3 +24,4 @@ asend = "asend" # Python async generator method
 [default.extend-words]
 # Add project-specific words that should not be treated as typos
 mke = "mke" # Sennheiser MKE product name
+consts = "consts"  # Common abbreviation for "constants"