Bump tiny-sdf version for an RTL glyph width fix.

[ChrisLoer]

mapbox/tiny-sdf#26 prevented crashes on characters from RTL scripts, but could still mis-calculate the glyph width, leading to cut off characters. Poking around in MDN, I realized that the canvas textAlign property allows us to force all text to be laid out with left-alignment, which gives us the results the algorithm was expecting in the first place. This PR updates gl-js to use the version of TinySDF fixed with mapbox/tiny-sdf#27.

Before

After

Launch Checklist

• briefly describe the changes in this PR
• include before/after visuals or gifs if this PR includes visual changes
• write tests for all new functionality
• document any changes to public APIs
• post benchmark scores
• manually test the debug page
• tagged @mapbox/map-design-team @mapbox/static-apis if this PR includes style spec API or visual changes
• tagged @mapbox/gl-native if this PR includes shader changes or needs a native port
• apply changelog label ('bug', 'feature', 'docs', etc) or use the label 'skip changelog'
• add an entry inside this element for inclusion in the mapbox-gl-js changelog: <changelog></changelog>

@karimnaaji @mourner

[mourner]

Needs yarn.lock update as well.