ESPHome 2024.11 changes font glyph parser

The latest ESPHome is now considering the leading and trailing newlines on our glpyhs definition as glyphs, which is just... sigh.

Failed config

font: [source /data/packages/fb5ab872/OLED_core.yaml:63]
  - file: 
      path: /data/font/PT Mono@400@False@v1.ttf
      type: gfonts
    id: fnt9
    size: 9
    glyphs: 
      - ():?AGHIKMQUV abcdefghijklnorstuvwyz
    glyphsets: []
    ignore_missing_glyphs: False
    bpp: 1
    extras: []
  
  Font PT Mono@400@False@v1.ttf is missing 1 glyph:
      
   (b'\\n').
  - file: gfonts://PT Mono
    id: fnt12
    size: 12