ci: upgrade actions/checkout to v3

Squashed commit of the following:

commit fac38b9293c6963cbc081f05f67b36d652524956
Author: Oscar Dominguez <dominguez.celada@gmail.com>
Date:   Sun Oct 2 02:50:33 2022 +0200

    ci(publish-docker): upgrade actions/checkout to v3 (#2721)

commit f352646887682e80105ca758849415f9628dd336
Author: Oscar Dominguez <dominguez.celada@gmail.com>
Date:   Sun Oct 2 02:50:15 2022 +0200

    ci(deploy-staging-netlify): upgrade actions/checkout to v3 (#2722)

commit 7afc517620a5f649dc08b1bf5afd6af086f20af9
Author: Oscar Dominguez <dominguez.celada@gmail.com>
Date:   Sun Oct 2 02:49:57 2022 +0200

    ci(deploy-prod): upgrade actions/checkout to v3 (#2723)

commit 50f0540f5afcbd835fa6db89e575aead1023c9ff
Author: Oscar Dominguez <dominguez.celada@gmail.com>
Date:   Sun Oct 2 02:49:45 2022 +0200

    ci(codeql-analysis): upgrade actions/checkout to v3 (#2724)

commit fc5d5ea131a553b1f38b272525f40941eea031ee
Author: Oscar Dominguez <dominguez.celada@gmail.com>
Date:   Sun Oct 2 02:49:31 2022 +0200

    ci(deploy-netlify): upgrade actions/checkout to v3 (#2725)

commit 4e16962001800b633309c726f71ac476efba4e13
Author: Oscar Dominguez <dominguez.celada@gmail.com>
Date:   Sun Oct 2 02:47:40 2022 +0200

    chore(PR template): fix typo (#2726)

.github/pull_request_template.md

@@ -23,4 +23,4 @@ Closes # <!-- Issue # here -->
 - [ ] All the tests have passed
 
 ### Additional Information
-<!-- Any additional information like breaking changes, dependencies added, screenshots, comparisons between new and old behavior, etc. -->
+<!-- Any additional information like breaking changes, dependencies added, screenshots, comparisons between new and old behaviour, etc. -->

.github/workflows/codeql-analysis.yml

@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/deploy-netlify.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup and run pnpm install
         uses: pnpm/action-setup@v2.2.2

.github/workflows/deploy-prod.yml

@@ -9,7 +9,7 @@ jobs:
   deploy_live_website:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: FirebaseExtended/action-hosting-deploy@v0
         with:
           repoToken: '${{ secrets.GITHUB_TOKEN }}'

.github/workflows/deploy-staging-netlify.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup and run pnpm install
         uses: pnpm/action-setup@v2.2.2

.github/workflows/publish-docker.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2