Update workflow runners

This change updates the workflow runners to move away from the soon to
be deprecated `ubuntu-20.04` image and use `ubuntu-latest` instead.

Ref: actions/runner-images#11101

Author: maxrake

.github/workflows/release.yml

@@ -46,7 +46,7 @@ jobs:
       matrix:
         include:
           - target: x86_64-unknown-linux-gnu
-            os: ubuntu-20.04
+            os: ubuntu-latest
           - target: aarch64-unknown-linux-gnu
             os: [self-hosted, linux, arm64]
           - target: x86_64-apple-darwin

.github/workflows/test.yml

@@ -15,7 +15,7 @@ on:
 jobs:
   rustfmt:
     if: github.event_name != 'schedule'
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout the repo
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -32,7 +32,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-20.04
+          - os: ubuntu-latest
             flags: --all-features
           - os: macos-14
             flags: --all-features
@@ -65,7 +65,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-14]
+        os: [ubuntu-latest, macos-14]
         include:
           - os: windows-latest
             flags: --no-default-features -F extensions
@@ -96,7 +96,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-14, windows-latest]
+        os: [ubuntu-latest, macos-14, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout the repo
@@ -127,7 +127,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-14]
+        os: [ubuntu-latest, macos-14]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout the repo