chore: upgrade ubuntu workflow instances

Related to: actions/runner-images#11101
Fix: https://github.com/supabase/postgrest-js/actions/runs/15106213807\?pr\=618

Author: avallete

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   test:
     name: Test
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
 

.github/workflows/docs.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   docs:
     name: Publish docs
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
 

.github/workflows/release.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   release:
     name: Release
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2