fix(db): quote postgres keywords

[aymanbagabas]

The keyword "key" is a reserved word in Postgres and must be quoted if used as a column name.

Fixes: #380

[codecov]

Codecov Report

Patch coverage: 45.16% and project coverage change: -0.19% ⚠️

Comparison is base (050a0d1) 50.52% compared to head (da59faf) 50.34%.
Report is 48 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #383      +/-   ##
==========================================
- Coverage   50.52%   50.34%   -0.19%     
==========================================
  Files         107      133      +26     
  Lines        8209    11265    +3056     
==========================================
+ Hits         4148     5671    +1523     
- Misses       3767     5157    +1390     
- Partials      294      437     +143     

Files Changed	Coverage Δ
git/repo.go	50.69% <ø> (+6.71%)	⬆️
server/access/access.go	64.70% <0.00%> (-26.97%)	⬇️
server/backend/hooks.go	0.00% <0.00%> (ø)
server/config/context.go	85.71% <0.00%> (ø)
server/config/file.go	100.00% <ø> (ø)
server/daemon/daemon.go	49.76% <0.00%> (+3.03%)	⬆️
server/db/errors.go	31.57% <ø> (ø)
server/db/logger.go	37.31% <0.00%> (+12.31%)	⬆️
server/db/migrate/migrate.go	32.53% <0.00%> (ø)
server/git/git.go	31.66% <ø> (+5.00%)	⬆️
... and 68 more

... and 4 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.