Add Dependabot

.github/CODEOWNERS

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+*   @luketainton

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    assignees:
+      - "luketainton"
+    reviewers:
+      - "luketainton"
+    commit-message:
+      prefix: "chore(actions)"
+      include: "scope"
+    labels:
+      - "dependencies"
+
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    assignees:
+      - "luketainton"
+    reviewers:
+      - "luketainton"
+    commit-message:
+      prefix: "chore(docker)"
+      include: "scope"
+    labels:
+      - "dependencies"
+
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    assignees:
+      - "luketainton"
+    reviewers:
+      - "luketainton"
+    commit-message:
+      prefix: "chore(pip-prod)"
+      prefix-development: "chore(pip-dev)"
+      include: "scope"
+    labels:
+      - "dependencies"

.github/renovate.json

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+{
+  "extends": ["config:base"],
+  "platformCommit": true,
+  "dependencyDashboardAutoclose": true,
+  "assignAutomerge": true,
+  "assigneesFromCodeOwners": true,
+  "rebaseWhen": "behind-base-branch",
+  "rollbackPrs": true,
+  "labels": ["dependencies"],
+  "packageRules": [
+    {
+      "matchPackagePatterns": ["black", "pylint"],
+      "labels": ["linting"]
+    },
+    {
+      "matchPackagePatterns": ["coverage", "pytest"],
+      "labels": ["unit-tests"]
+    }
+  ],
+  "vulnerabilityAlerts": {
+    "enabled": true,
+    "labels": ["security"],
+    "commitMessagePrefix": "[SECURITY] ",
+    "prCreation": "immediate"
+  }
+}