Use ubuntu-22.04 on github runner (NOAA-EMC#3005)

This PR reverts to `ubuntu-22.04` image of the GH runner.
`ubuntu-latest` is having an issue with python pip.

.github/workflows/ci_unit_tests.yaml

@@ -4,8 +4,8 @@ on: [pull_request, push, workflow_dispatch]
 jobs:
 
   ci_pytest:
-      runs-on: ubuntu-latest
-      name: Run unit tests on CI system      
+      runs-on: ubuntu-22.04
+      name: Run unit tests on CI system
       permissions:
         checks: write
 

.github/workflows/docs.yaml

@@ -21,7 +21,7 @@ jobs:
     permissions:
       pull-requests: 'write'
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     name: Build and deploy documentation
 
     steps:

.github/workflows/hera.yaml

@@ -9,7 +9,7 @@ on:
 jobs:
 
   getlabels:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     outputs:
       labels: ${{ steps.id.outputs.labels }}
     steps:

.github/workflows/linters.yaml

@@ -12,7 +12,7 @@ defaults:
 
 jobs:
   lint-shell:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     permissions:
       security-events: write

.github/workflows/orion.yaml

@@ -9,7 +9,7 @@ on:
 jobs:
 
   getlabels:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     outputs:
       labels: ${{ steps.id.outputs.labels }}
     steps:
@@ -27,7 +27,7 @@ jobs:
 
   passed:
     if: contains( needs.getlabels.outputs.labels, 'CI-Orion-Passed') && github.event.pull_request.merged
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs:
      - getlabels
 

.github/workflows/pynorms.yaml

@@ -3,7 +3,7 @@ on: [push, pull_request]
 
 jobs:
   check_norms:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     name: Check Python coding norms with pycodestyle
 
     steps: