Disable cosign step in docker workflow (#4145)

- Is not working, just throws errors
- Also disable dependency workflow (is not working)

.github/workflows/update.yml.disabled

@@ -0,0 +1,23 @@
+name: Update dependency files regularly
+
+on:
+  workflow_dispatch: null
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # pin@v3.1.0
+      - name: Setup
+        run: pip install -r requirements-dev.txt
+      - name: Update requirements.txt
+        run: pip-compile --output-file=requirements.txt requirements.in -U
+      - name: Update requirements-dev.txt
+        run: pip-compile --generate-hashes --output-file=requirements-dev.txt
+          requirements-dev.in -U
+      - uses: stefanzweifel/git-auto-commit-action@fd157da78fa13d9383e5580d1fd1184d89554b51 # pin@v4.15.1
+        with:
+          commit_message: "[Bot] Updated dependency"
+          branch: dep-update