Update dependency fastapi to v0.115.3

Author: renovate[bot]

poetry.lock

@@ -10,7 +10,7 @@ packages = [{include = "hackspaceapi"}]
 
 [tool.poetry.dependencies]
 python = "^3.10"
-fastapi = {version = "0.110.1", extras = ["all"]}
+fastapi = {version = "0.115.3", extras = ["all"]}
 requests = "2.31.0"
 cachetools = "^5.3.1"
 ics = "0.7.2"