ci: downgrade github ubuntu runner to v20.04 (#1168)

Author: pczeglik-iohk

.github/workflows/chromatic-core.yml

@@ -19,7 +19,7 @@ jobs:
   chromatic-deployment:
     name: Chromatic Core
     if: github.event.pull_request.draft == false
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

.github/workflows/chromatic-staking.yml

@@ -19,7 +19,7 @@ jobs:
   chromatic-deployment:
     name: Chromatic Staking
     if: github.event.pull_request.draft == false
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

.github/workflows/chromatic-ui.yml

@@ -19,7 +19,7 @@ jobs:
   chromatic-deployment:
     name: Chromatic UI
     if: github.event.pull_request.draft == false
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ concurrency:
 jobs:
   prepare:
     name: Prepare
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
 
     steps:
       - name: Checkout repository
@@ -80,7 +80,7 @@ jobs:
 
   unitTests:
     name: Unit tests
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     needs: prepare
 
     steps:
@@ -144,7 +144,7 @@ jobs:
 
   smokeTests:
     name: Smoke tests
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     needs: prepare
 
     steps:

.github/workflows/e2e-tests-win.yml

@@ -146,7 +146,7 @@ jobs:
   publish-reports-linux:
     if: always()
     needs: run-tests-windows
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

.github/workflows/sonar-cloud.yml

@@ -14,7 +14,7 @@ concurrency:
 jobs:
   sonarcloud:
     name: SonarCloud Code Analysis
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
         with: