Use custom runners

Author: Jarema

.github/workflows/test.yml

@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest-8-cores, macos-latest]
         go-bin: ['~/go/bin']
         include:
           - os: windows-latest
@@ -71,7 +71,7 @@ jobs:
 
   check_format:
     name: check format (ubuntu-latest / nightly)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
@@ -85,7 +85,7 @@ jobs:
 
   check_lint:
     name: check linter (ubuntu-latest / stable)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
@@ -106,7 +106,7 @@ jobs:
 
   check_docs:
     name: check docs (ubuntu-latest / stable)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
@@ -125,7 +125,7 @@ jobs:
 
   check_licenses:
     name: check licenses (ubuntu-latest / stable)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
@@ -137,7 +137,7 @@ jobs:
 
   check_msrv:
     name: check minimal supported rust version (ubuntu-latest / msrv)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
@@ -159,7 +159,7 @@ jobs:
 
   check_examples:
     name: check examples (ubuntu-latest / stable)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
@@ -180,7 +180,7 @@ jobs:
 
   check_spelling:
     name: check spelling (ubuntu-latest / nightly)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v3
@@ -205,7 +205,7 @@ jobs:
 
   check_min_versions:
     name: check minimal versions of transitive dependencies (ubuntu-latest / stable)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-8-cores
     steps:
       - name: Check out repository
         uses: actions/checkout@v4