Update light theme fonts line heights

[xkello]

Update line heights according to design system: https://github.com/MerginMaps/server-private/issues/3181

[coveralls]

Pull Request Test Coverage Report for Build 21391384193

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 21 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.04%) to 94.371%

---

Files with Coverage Reduction	New Missed Lines	%
server/mergin/tests/test_utils.py	1	99.01%
server/mergin/utils.py	20	67.5%

Totals
Change from base Build 21353134513:	-0.04%
Covered Lines:	8098
Relevant Lines:	8581

---

💛 - Coveralls