Update gh workflows to not use dotrun snap

.github/workflows/pr.yaml

@@ -50,23 +50,23 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install dotrun
         uses: canonical/install-dotrun@main
 
       - name: Install dependencies
-        run: /snap/bin/dotrun install
+        run: dotrun install
 
       - name: Run dotrun
         run: |
-          /snap/bin/dotrun &
+          dotrun &
           curl --head --fail --retry-delay 1 --retry 30 --retry-connrefused http://localhost:8030/security/api/docs
 
   lint-python:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Node dependencies
         run: yarn install
@@ -97,7 +97,7 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install requirements
         run: |
@@ -120,7 +120,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Check inclusive naming
         uses: canonical-web-and-design/inclusive-naming@main