Bump actions/checkout from 4 to 5 (#205)

Author: llucax

.github/workflows/ci-pr.yaml

@@ -30,7 +30,7 @@ jobs:
         uses: frequenz-floss/gh-action-setup-git@v1.0.0
 
       - name: Fetch sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           submodules: true
 

.github/workflows/ci.yaml

@@ -79,7 +79,7 @@ jobs:
         uses: frequenz-floss/gh-action-setup-git@v1.0.0
 
       - name: Fetch sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           submodules: true
 
@@ -177,7 +177,7 @@ jobs:
         uses: frequenz-floss/gh-action-setup-git@v1.0.0
 
       - name: Fetch sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           submodules: true
 
@@ -213,7 +213,7 @@ jobs:
         uses: frequenz-floss/gh-action-setup-git@v1.0.0
 
       - name: Fetch sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           submodules: true