Update alpine versions

[DylanGuedes]

What this PR does / why we need it:
Update alpine versions used by our images to 3.18.3

Which issue(s) this PR fixes:
N/A

Special notes for your reviewer:

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• CHANGELOG.md updated
  • If the change is worth mentioning in the release notes, add add-to-release-notes label
• Changes that require user attention or interaction to upgrade are documented in docs/sources/setup/upgrade/_index.md
• For Helm chart changes bump the Helm chart version in production/helm/loki/Chart.yaml and update production/helm/loki/CHANGELOG.md and production/helm/loki/README.md. Example PR

[grafanabot]

The backport to release-2.8.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new branch
git switch --create backport-10573-to-release-2.8.x origin/release-2.8.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 46813867758729df3e18763ad7366f141291f3c9
# When the conflicts are resolved, stage and commit the changes
git add . && git cherry-pick --continue

If you have the GitHub CLI installed:

# Create the PR body template
PR_BODY=$(gh pr view 10573 --json body --template 'Backport 46813867758729df3e18763ad7366f141291f3c9 from #10573{{ "\n\n---\n\n" }}{{ index . "body" }}')
# Push the branch to GitHub and a PR
echo "${PR_BODY}" | gh pr create --title "[release-2.8.x] Update alpine versions" --body-file - --label "product-approved" --label "backport" --base release-2.8.x --milestone release-2.8.x --web

Or, if you don't have the GitHub CLI installed (we recommend you install it!):

# If you don't have the GitHub CLI installed: Push the branch to GitHub and manually create a PR:
git push --set-upstream origin backport-10573-to-release-2.8.x
# Remove the local backport branch
git switch main
git branch -D backport-10573-to-release-2.8.x

Unless you've used the GitHub CLI above, now create a pull request where the base branch is release-2.8.x and the compare/head branch is backport-10573-to-release-2.8.x.