Bump actions/checkout from 2.4.0 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.4.0 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/ec3a7ce113134d7a93b817d10a8272cb61118579...a12a3943b4bdde767164f792f33f40b04645d846)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/.github/workflows/build-extra.yml b/.github/workflows/build-extra.yml
index b598c40e3..0d53b270d 100644
--- a/.github/workflows/build-extra.yml
+++ b/.github/workflows/build-extra.yml
@@ -30,7 +30,7 @@ jobs:
   build-clang:
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+    - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
     - name: configure
       run: CC=clang-11 ./configure --enable-fatal-warnings
     - name: make
@@ -38,7 +38,7 @@ jobs:
   scan-build:
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+    - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
     - name: install clang-tools-11
       run: sudo apt-get install clang-tools-11
     - name: configure
@@ -48,7 +48,7 @@ jobs:
   cppcheck:
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+    - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
     - name: install cppcheck
       run: sudo apt-get install cppcheck
     - name: cppcheck