[KF-7821] Upgrading GH actions (#63)

* Upgrading GH actions to checkout v4

* Apply suggestions from Mano's review

Co-authored-by: Manos Vlassis <57320708+mvlassis@users.noreply.github.com>
Signed-off-by: Angel Fernandez <103958447+afgambin@users.noreply.github.com>

* Removing triggering actions in PRs

---------

Signed-off-by: Angel Fernandez <103958447+afgambin@users.noreply.github.com>
Co-authored-by: Manos Vlassis <57320708+mvlassis@users.noreply.github.com>

Author: afgambin

.github/workflows/deploy-to-aks-feast.yaml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
 
       - name: Set envvars from dependencies.yaml
         run: |

.github/workflows/deploy-to-aks.yaml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
 
       - name: Set envvars from dependencies.yaml
         run: |