Titiler-pgstac

* update Type information for `dependencies.get_stac_item` (back ported from 0.2.2)

**breaking changes**

* Use `/collections/{collection_id}/items/{item_id}` prefix for **Item** endpoint.

Before
{endpoint}/stac/info?collection=collection1&item=item1

Now
{endpoint}/collections/collection1/items/item1/info


* Change tile url path parameter order from `/tiles/{searchid}/{TileMatrixSetId}/{z}/{x}/{y}` to `/{searchid}/tiles/{TileMatrixSetId}/{z}/{x}/{y}`

Before
{endpoint}/mosaic/tiles/20200307aC0853900w361030/0/0/0

Now
{endpoint}/mosaic/20200307aC0853900w361030/tiles/0/0/0

* add retry mechanism on Database connection issues for `PGSTACBackend.get_assets()` and `get_stac_item` methods

* fix maximum version of FastAPI to 0.92 (to avoid breaking change of starlette >0.25)

* update Type information for `dependencies.get_stac_item`

* update titiler requirement to `>=0.10.1,<0.11` and fix `/map` endpoint (to accept multiple TMS)