Use WIF instead of service account key

[faucomte97]

This change is 

[SKairinos]

Reviewed 5 of 5 files at r1, all commit messages.
Reviewable status: all files reviewed, 4 unresolved discussions (waiting on @faucomte97)

---

.github/workflows/backend.yaml line 27 at r1 (raw file):

      source-path: src

  deploy:

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

---

.github/workflows/cron.yaml line 12 at r1 (raw file):

jobs:
  deploy:

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

---

.github/workflows/dispatch.yaml line 12 at r1 (raw file):

jobs:
  deploy:

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

---

.github/workflows/frontend.yaml line 26 at r1 (raw file):

      node-version: ${{ inputs.node-version }}

  deploy:

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

[faucomte97]

Reviewable status: all files reviewed, 4 unresolved discussions (waiting on @SKairinos)

---

.github/workflows/backend.yaml line 27 at r1 (raw file):

Previously, SKairinos (Stefan Kairinos) wrote…

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

Done.

---

.github/workflows/cron.yaml line 12 at r1 (raw file):

Previously, SKairinos (Stefan Kairinos) wrote…

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

Done.

---

.github/workflows/dispatch.yaml line 12 at r1 (raw file):

Previously, SKairinos (Stefan Kairinos) wrote…

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

Done.

---

.github/workflows/frontend.yaml line 26 at r1 (raw file):

Previously, SKairinos (Stefan Kairinos) wrote…

please add the following:

permissions:
  id-token: 'write' # TODO: separate build and deploy jobs and create reusable deploy workflow

Done.

[SKairinos]

Reviewed 4 of 4 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @faucomte97)