[CI] Use ubuntu-22.04 instead of latest (24.04)

Author: slashmo

.github/workflows/soundness.yaml

@@ -7,7 +7,7 @@ concurrency:
 jobs:
   unacceptable-language-check:
     name: Unacceptable language check
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 1
     steps:
       - name: Checkout repository
@@ -17,7 +17,7 @@ jobs:
 
   license-header-check:
     name: License headers check
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 1
     steps:
       - name: Checkout repository
@@ -27,7 +27,7 @@ jobs:
 
   format-check:
     name: Format check
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 5
     steps:
       - name: Checkout repository
@@ -43,7 +43,7 @@ jobs:
 
   broken-symlinks-check:
     name: Broken symlinks check
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 1
     steps:
       - name: Checkout repository

.github/workflows/unit-test.yaml

@@ -9,7 +9,7 @@ concurrency:
 jobs:
   unit-test:
     name: Unit Test
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 10
     strategy:
       fail-fast: false