[chore] Use public Linux ARM64 runners (#1818)

Author: Kielek

.github/workflows/build.yaml

@@ -12,7 +12,7 @@ jobs:
   generate-and-test:
     strategy:
       matrix:
-        os: [ ubuntu-latest, otel-linux-arm64]
+        os: [ ubuntu-latest, ubuntu-22.04-arm]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout Repo

.github/workflows/checks.yml

@@ -25,7 +25,7 @@ jobs:
   lint:
     strategy:
       matrix:
-        os: [ ubuntu-latest, otel-linux-arm64]
+        os: [ ubuntu-latest, ubuntu-22.04-arm]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Install Go

README.md

@@ -25,6 +25,8 @@ Currently, OpenTelemetry Go Automatic Instrumentation is tested for the followin
 | ------- | ---------- | ------------ |
 | Ubuntu  | 1.23       | amd64        |
 | Ubuntu  | 1.22       | amd64        |
+| Ubuntu  | 1.23       | arm64        |
+| Ubuntu  | 1.22       | arm64        |
 
 Automatic instrumentation should work on any Linux kernel above 4.4.