🤖 Add depandabot 🤖 (#87)

## Aim of the PR
This PR fixes
[AB#233057](https://dev.azure.com/EquinorASA/bb9bd8cb-74f7-4ffa-b0cb-60eff0a0be58/_workitems/edit/233057)

## Implementation 
Add a depandabot workflow: 
- check for python package upgrades
- check for nuget package upgrades
- check for npm package upgrades

## Type of change
- [ ] Bug fix 
- [x] New feature 
- [ ] Breaking change 
- [ ] This change requires a documentation update

.github/depandabot.yml

@@ -0,0 +1,39 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    target-branch: "main"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"
+
+  - package-ecosystem: "pip"
+    directory: "/cli/chex/"
+    target-branch: "main"
+    labels:
+      - "Pip deps"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"
+
+  - package-ecosystem: "nuget"
+    directory: "/client/Boundaries/"
+    target-branch: "main"
+    labels:
+       - "nuget deps"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"
+
+  - package-ecosystem: "npm"
+    directory: "/www/"
+    target-branch: "main"
+    labels:
+      - "npm deps"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"