Update runners to ubuntu-24.04 from deprecated ubuntu-20.04 label (#2140)

Co-authored-by: Bill Napier <[email protected]>

Author: google-admin

.github/workflows/reviewdog.yml

@@ -14,7 +14,7 @@ jobs:
       checks: write  # for reviewdog/action-suggester to report issues using checks
       contents: read  # for actions/checkout to fetch code
     name: Bazel Buildifier
-    runs-on: ubuntu-20.04
+    runs-on: 'ubuntu-24.04'
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - run: |
@@ -26,7 +26,7 @@ jobs:
       checks: write  # for reviewdog/action-suggester to report issues using checks
       contents: read  # for actions/checkout to fetch code
     name: Python Black
-    runs-on: ubuntu-20.04
+    runs-on: 'ubuntu-24.04'
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - run: |
@@ -38,7 +38,7 @@ jobs:
       checks: write  # for reviewdog/action-suggester to report issues using checks
       contents: read  # for actions/checkout to fetch code
     name: Clang Format
-    runs-on: ubuntu-20.04
+    runs-on: 'ubuntu-24.04'
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - run: |
@@ -50,7 +50,7 @@ jobs:
       checks: write  # for reviewdog/action-suggester to report issues using checks
       contents: read  # for actions/checkout to fetch code
     name: Python Pyupgrade
-    runs-on: ubuntu-20.04
+    runs-on: 'ubuntu-24.04'
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - run: |