Bump flit from 1.3 to 2.0.2 (#55)

* Bump flit from 1.3 to 2.0.2

Bumps [flit](https://github.com/takluyver/flit) from 1.3 to 2.0.2.
- [Release notes](https://github.com/takluyver/flit/releases)
- [Changelog](https://github.com/takluyver/flit/blob/master/doc/history.rst)
- [Commits](https://github.com/takluyver/flit/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* Update Flit build settings following 2.x changes

Pipfile.lock

@@ -366,11 +366,18 @@
         },
         "flit": {
             "hashes": [
-                "sha256:1d93f7a833ed8a6e120ddc40db5c4763bc39bccc75c05081ec8285ece718aefb",
+                "sha256:1884458418d480e0810d0aa19b6f5e19591b38defd6958a865fa28206f19b3c8",
-                "sha256:6f6f0fb83c51ffa3a150fa41b5ac118df9ea4a87c2c06dff4ebf9adbe7b52b36"
+                "sha256:eb5f0b72aee1063426e4806f33bf603cd91a8b5d66bd8b76d009701c36607fec"
             ],
             "index": "pypi",
-            "version": "==1.3"
+            "version": "==2.0.2"
+        },
+        "flit-core": {
+            "hashes": [
+                "sha256:9efcdca4ae84fd4d831e18d3cdb85a0b4f211a52d4b832408ff9a65bcc309928",
+                "sha256:c49546abb6afe371a13b78a2595d5afe1c0cd0aaa9dd753d800cd21259e51222"
+            ],
+            "version": "==2.0.2"
         },
         "htmlmin": {
             "hashes": [

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
-requires = ["flit"]
+requires = ["flit_core >=2,<3"]
-build-backend = "flit.buildapi"
+build-backend = "flit_core.buildapi"
 
 [tool.flit.metadata]
 module = "fastapi_users"