Remove "Add to docs project" workflow (#5135)

There's now a centralized workflow running in Writers' Toolkit that adds
issues from all repositories which removes the need to proliferate
per-repository workflows.

---------

Co-authored-by: Joey Orlando <joey.orlando@grafana.com>
Co-authored-by: GitHub Actions <actions@github.com>
Co-authored-by: Joey Orlando <joseph.t.orlando@gmail.com>
Co-authored-by: Matias Bordese <mbordese@gmail.com>
Co-authored-by: Vadim Stepanov <vadimkerr@gmail.com>
Co-authored-by: Dominik Broj <dominik.broj@grafana.com>
Co-authored-by: Michael Derynck <michael.derynck@grafana.com>
Co-authored-by: Yulya Artyukhina <Ferril.darkdiver@gmail.com>
Co-authored-by: Innokentii Konstantinov <innokenty.konstantinov@grafana.com>
Co-authored-by: Ildar Iskhakov <Ildar.iskhakov@grafana.com>
Co-authored-by: grafana-irm-app[bot] <165293418+grafana-irm-app[bot]@users.noreply.github.com>

.github/workflows/add-to-docs-project.yml

@@ -1,15 +0,0 @@
-name: Add to docs project
-on:
-  issues:
-    types: [labeled]
-  pull_request:
-    types: [labeled]
-jobs:
-  main:
-    if: ${{ github.event.label.name == 'type/docs' }}
-    permissions:
-      contents: read
-      id-token: write
-    runs-on: ubuntu-latest
-    steps:
-      - uses: grafana/writers-toolkit/add-to-docs-project@add-to-docs-project/v1

helm/oncall/Chart.yaml

@@ -2,8 +2,8 @@ apiVersion: v2
 name: oncall
 description: Developer-friendly incident response with brilliant Slack integration
 type: application
-version: 1.9.29
-appVersion: v1.9.29
+version: 1.10.2
+appVersion: v1.10.2
 dependencies:
   - name: cert-manager
     version: v1.8.0