build: Switch to ubuntu-latest for builds

This code does not have any dependencies that are specific to any specific
version of ubuntu.  So instead of testing on a specific version and then needing
to do work to keep the versions up-to-date, we switch to the ubuntu-latest
target which should be sufficient for testing purposes.

This work is being done as a part of https://github.com/openedx/platform-roadmap/issues/377

closes https://github.com/openedx/edx-platform/issues/35314

.github/workflows/ci-static-analysis.yml

@@ -10,7 +10,7 @@ jobs:
       matrix:
         python-version:
           - "3.11"
-        os: ["ubuntu-20.04"]
+        os: ["ubuntu-latest"]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/compile-python-requirements.yml

@@ -15,7 +15,7 @@ defaults:
 
 jobs:
   recompile-python-dependencies:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Check out target branch

.github/workflows/js-tests.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-latest]
         node-version: [18, 20]
         python-version:
           - "3.11"

.github/workflows/lint-imports.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   lint-imports:
     name: Lint Python Imports
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Check out branch

.github/workflows/migrations-check.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-latest]
         python-version:
           - "3.11"
         # 'pinned' is used to install the latest patch version of Django

.github/workflows/publish-ci-docker-image.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   push:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout

.github/workflows/pylint-checks.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   run-pylint:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:

.github/workflows/quality-checks.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-latest]
         python-version:
           - "3.11"
         node-version: [20]

.github/workflows/semgrep.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: "${{ matrix.os }}"
     strategy:
       matrix:
-        os: ["ubuntu-20.04"]
+        os: ["ubuntu-latest"]
         python-version:
           - "3.11"
 

.github/workflows/static-assets-check.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-latest]
         python-version:
           - "3.11"
         node-version: [18, 20]

.github/workflows/unit-tests.yml

@@ -15,7 +15,7 @@ concurrency:
 jobs:
   run-tests:
     name: ${{ matrix.shard_name }}(py=${{ matrix.python-version }},dj=${{ matrix.django-version }},mongo=${{ matrix.mongo-version }})
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version:
@@ -142,7 +142,7 @@ jobs:
           overwrite: true
 
   collect-and-verify:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - name: Setup Python
@@ -207,7 +207,7 @@ jobs:
   # https://github.com/orgs/community/discussions/33579
   success:
     name: Unit tests successful
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     if: always()
     needs: [run-tests]
     steps:
@@ -218,7 +218,7 @@ jobs:
           jobs: ${{ toJSON(needs) }}
 
   compile-warnings-report:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs: [run-tests]
     steps:
       - uses: actions/checkout@v4
@@ -246,7 +246,7 @@ jobs:
           overwrite: true
 
   merge-artifacts:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs: [compile-warnings-report]
     steps:
       - name: Merge Pytest Warnings JSON Artifacts
@@ -266,7 +266,7 @@ jobs:
   # Combine and upload coverage reports.
   coverage:
     if: (github.repository == 'edx/edx-platform-private') || (github.repository == 'openedx/edx-platform' && (startsWith(github.base_ref, 'open-release') == false))
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs: [run-tests]
     strategy:
       matrix:

.github/workflows/upgrade-one-python-dependency.yml

@@ -28,7 +28,7 @@ defaults:
 
 jobs:
   upgrade-one-python-dependency:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Check out target branch

.github/workflows/verify-dunder-init.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   verify_dunder_init:
     name: Verify __init__.py Files
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Check out branch