Update ubuntu version

Author: TatianaFomina

.github/workflows/bump-version.yml

@@ -5,7 +5,7 @@ on: [pull_request]
 jobs:
   # If pull request was merged then we should check for a package version update
   check-version-update:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       # Checkout to target branch
       - uses: actions/checkout@v2
@@ -33,7 +33,7 @@ jobs:
 
   bump-version:
     needs: check-version-update
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       # Checkout to target branch
       - uses: actions/checkout@v2

.github/workflows/nodejs.yml

@@ -5,7 +5,7 @@ on: [pull_request]
 jobs:
   lint:
     name: ESlint
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js

.github/workflows/pr-to-prod.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   update-from-master:
     if: github.event.pull_request.merged == true
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
 

.github/workflows/tests.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   build:
     name: Run Jest tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - name: Install modules