Bump actions/checkout from 2 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/approved_prs_reminder.yaml

@@ -15,7 +15,7 @@ jobs:
   create-sync-issue:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-python@v3
       - name: Install python
         run: pip install ghapi pandas

.github/workflows/deploy-grafana-dashboards.yaml

@@ -17,7 +17,7 @@ jobs:
           - cluster_name: utoronto
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup dependencies
         run: |

.github/workflows/deploy-hubs.yaml

@@ -52,7 +52,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Check if any of our base files have changed
         uses: dorny/paths-filter@v2

.github/workflows/doc-links.yml

@@ -12,7 +12,7 @@ jobs:
   linkcheck:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Install environment
         uses: conda-incubator/setup-miniconda@v2

.github/workflows/python-lint.yaml

@@ -9,7 +9,7 @@ jobs:
   flake8_py3:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v3
       - name: Setup Python
         uses: actions/setup-python@v3
         with:

.github/workflows/terraform-lint.yaml

@@ -9,7 +9,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: hashicorp/setup-terraform@v1
       - uses: terraform-linters/setup-tflint@v1
       - name: Run terraform linter

.github/workflows/validate-clusters.yaml

@@ -50,7 +50,7 @@ jobs:
           - cluster_name: uwhackweeks
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Check if any cluster common files has changed
         uses: dorny/paths-filter@v2