ci: bump remaining outdated Actions versions

I noticed that Junio recently bumped a couple of these Actions versions, and incidentally I also activated automatic Dependabot updates of those in git-for-windows/git. Dependabot noticed a couple of yet-unaddressed updates, which I accumulated into a single patch.

This patch is based on jc/github-actions-update.

Changes since v1 (sorry for the quick succession):

* The linux32 job cannot handle Node.js Actions, and therefore would fail to run the latest actions/upload-artifact version. I only noticed this after submitting v1 because CI does not fail (since this step is only in use when something in Git's test suite breaks).
* To avoid making the same mistake even one more time, I added a commit that puts big fat warnings next to the Actions that must not be updated to newer (i.e. Node.js) versions.

Johannes Schindelin (2):
ci: bump remaining outdated Actions versions ci(linux32): add a note about Actions that must not be updated

 .github/workflows/coverity.yml |  4 ++--
 .github/workflows/main.yml     | 20 ++++++++++----------
 2 files changed, 12 insertions(+), 12 deletions(-)

base-commit: dcce2bda214ac4c838f4b85f2c550816df3a6ac9
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1660%2Fdscho%2Fmoar-github-actions-updates-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1660/dscho/moar-github-actions-updates-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/1660

Range-diff vs v1:

1: 77c0810bf1a ! 1: 2b35b9878a7 ci: bump remaining outdated Actions versions
@@ .github/workflows/main.yml: jobs:
- name: Upload failed tests' directories
if: failure() && env.FAILED_TEST_ARTIFACTS != '' && matrix.vector.jobname != 'linux32'
- uses: actions/upload-artifact@v3
-+ uses: actions/upload-artifact@v4
- with:
- name: failed-tests-${{matrix.vector.jobname}}
- path: ${{env.FAILED_TEST_ARTIFACTS}}
- - name: Upload failed tests' directories
- if: failure() && env.FAILED_TEST_ARTIFACTS != '' && matrix.vector.jobname == 'linux32'
-- uses: actions/upload-artifact@v1
+ uses: actions/upload-artifact@v4
with:
name: failed-tests-${{matrix.vector.jobname}}
-: ----------- > 2: 9088cc60bda ci(linux32): add a note about Actions that must not be updated

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