Upgrade to GitHub-native Dependabot

.github/dependabot.yml

@@ -0,0 +1,83 @@
+version: 2
+updates:
+- package-ecosystem: docker
+  directory: "/"
+  schedule:
+    interval: monthly
+    time: "08:00"
+    timezone: NZ
+  open-pull-requests-limit: 2
+  labels:
+  - "docker :whale:"
+- package-ecosystem: pip
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "08:00"
+    timezone: NZ
+  open-pull-requests-limit: 2
+  ignore:
+  - dependency-name: cupy-cuda102
+    versions:
+    - ">= 8.1.0.a, < 8.1.1"
+  - dependency-name: cython
+    versions:
+    - ">= 0.29.19.a, < 0.29.20"
+  - dependency-name: dask
+    versions:
+    - ">= 2.27.a, < 2.28"
+  - dependency-name: dask
+    versions:
+    - ">= 2.28.a, < 2.29"
+  - dependency-name: dask-labextension
+    versions:
+    - ">= 5.0.1.a, < 5.0.2"
+  - dependency-name: distributed
+    versions:
+    - ">= 2.30.1.a, < 2.30.2"
+  - dependency-name: jupyterlab
+    versions:
+    - ">= 2.1.4.a, < 2.1.5"
+  - dependency-name: jupytext
+    versions:
+    - ">= 1.6.a, < 1.7"
+  - dependency-name: llvmlite
+    versions:
+    - ">= 0.33.0.a, < 0.33.1"
+  - dependency-name: lxml
+    versions:
+    - ">= 4.5.1.a, < 4.5.2"
+  - dependency-name: matplotlib
+    versions:
+    - ">= 3.3.1.a, < 3.3.2"
+  - dependency-name: pyarrow
+    versions:
+    - "> 1.0.1"
+  - dependency-name: pyarrow
+    versions:
+    - ">= 2.0.0.a, < 2.0.1"
+  - dependency-name: pytest
+    versions:
+    - ">= 6.0.0.a, < 6.0.1"
+  - dependency-name: pytest
+    versions:
+    - ">= 6.0.1.a, < 6.0.2"
+  - dependency-name: tqdm
+    versions:
+    - ">= 4.46.1.a, < 4.46.2"
+  - dependency-name: tqdm
+    versions:
+    - ">= 4.49.a, < 4.50"
+  - dependency-name: tqdm
+    versions:
+    - ">= 4.54.1.a, < 4.54.2"
+  - dependency-name: distributed
+    versions:
+    - 2021.1.1
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: monthly
+    time: "08:00"
+    timezone: NZ
+  open-pull-requests-limit: 2