ci: pin GitHub-hosted runners to explicit Ubuntu versions

.github/workflows/ci-checks.yml

@@ -8,12 +8,12 @@ on:
 
 jobs:
     black:
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-26.04
         steps:
         - uses: actions/checkout@v2
         - uses: psf/black@stable
     pylint:
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-26.04
         name: "pylint"
         steps: 
         -   uses: actions/checkout@v2
@@ -31,7 +31,7 @@ jobs:
         -   name: "Run pylint!"
             run: "pylint manager daeploy"
     flake8: 
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-26.04
         name: "flake8"
         steps: 
         -   uses: actions/checkout@v2
@@ -44,7 +44,7 @@ jobs:
         -   name: "Run flake8!"
             run: "flake8 manager daeploy"
     pytest-manager: 
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-26.04
         needs: [black, pylint, flake8]
         steps: 
         - name: Login to Docker Hub
@@ -75,7 +75,7 @@ jobs:
         -   name: "Running manager tests with pytest"
             run: "python -m pytest --verbose tests/manager_test/"
     pytest-sdk: 
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-26.04
         needs: [black, pylint, flake8, pytest-manager]
         strategy:
             matrix:
@@ -111,7 +111,7 @@ jobs:
         -   name: "Running sdk tests with pytest"
             run: "python -m pytest --verbose tests/sdk_test/"
     pytest-e2e: 
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-26.04
         needs: [pytest-sdk]
         steps: 
         -   uses: actions/checkout@v2

.github/workflows/docker_image_release.yml

@@ -8,7 +8,7 @@ jobs:
 
   build:
     name: Build and run daeploy Manager
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
     - name: Checkout code
       uses: actions/checkout@v2

.github/workflows/docs.yml

@@ -9,7 +9,7 @@ on:
 jobs:
     docs: 
       name: Build and push docs to GH pages
-      runs-on: ubuntu-latest
+      runs-on: ubuntu-24.04
       steps: 
         -   uses: actions/checkout@v2
             with:

.github/workflows/examples.yml

@@ -7,7 +7,7 @@ on:
 jobs:
     examples:
       name: Push examples to another repository
-      runs-on: ubuntu-latest
+      runs-on: ubuntu-24.04
       steps:
         - uses: actions/checkout@v2
         - name: Copy start_manager script to examples directory

.github/workflows/provision.yml

@@ -29,7 +29,7 @@ jobs:
 
   provision:
     name: Provision a new docker container
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
 
     - name: Checkout code

.github/workflows/pypi-upload.yml

@@ -7,7 +7,7 @@ on:
 jobs:
   deploy:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     steps:
     - uses: actions/checkout@v2