switch to pytest-postgresql

[vincentsarago]

closes #176

[vincentsarago]

For some reason the tests works on CI but I can't make them pass locally 😬

I'm getting some weird datetime/timezone issues.

[vincentsarago]

we need to set the DB to UTC: https://github.com/stac-utils/titiler-pgstac/pull/188/files#diff-e52e4ddd58b7ef887ab03c04116e676f6280b824ab7469d5d3080e5cba4f2128R64-R67

[github-actions]

⚠️ Performance Alert ⚠️

Possible performance regression was detected for benchmark 'TiPg Benchmarks'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.30.

Benchmark suite	Current: 2046e30	Previous: 4654a91	Ratio
tests/benchmarks.py::test_benchmark_items[csv-250]	20.882789661995528 iter/sec (stddev: 0.003541245914462292)	28.817119843085564 iter/sec (stddev: 0.0012624291310756328)	1.38
tests/benchmarks.py::test_benchmark_item[geojson-NewfoundlandandLabrador]	1.2673414146805035 iter/sec (stddev: 0.006192754242606211)	4.869835107548742 iter/sec (stddev: 0.004706112207518639)	3.84
tests/benchmarks.py::test_benchmark_item[geojson-Saskatchewan]	28.76088630233323 iter/sec (stddev: 0.000421734826696976)	92.53320049051663 iter/sec (stddev: 0.00031973052336099154)	3.22
tests/benchmarks.py::test_benchmark_item[html-NewfoundlandandLabrador]	0.8385503829262192 iter/sec (stddev: 0.010864165700907154)	1.6242215719149122 iter/sec (stddev: 0.10113599101273286)	1.94
tests/benchmarks.py::test_benchmark_item[html-Saskatchewan]	17.024123517234898 iter/sec (stddev: 0.02117234812267621)	30.43668783636835 iter/sec (stddev: 0.026252997338963968)	1.79
tests/benchmarks.py::test_benchmark_tile[0/0/0-WGS1984Quad]	8.851862453104323 iter/sec (stddev: 0.0013189383474098584)	12.347550474165763 iter/sec (stddev: 0.0024041811762132216)	1.39
tests/benchmarks.py::test_benchmark_tile[0/0/0-WebMercatorQuad]	5.9400228291712 iter/sec (stddev: 0.0034345186796084395)	7.827946311590942 iter/sec (stddev: 0.008126120500574971)	1.32

This comment was automatically generated by workflow using github-action-benchmark.