ruler: increase retries backoff limit to 1m

[dimitarvdimitrov]

What this PR does

the previous limit of 2s is too small and doesn't end up spreading out retries for long enough

follow-up of #10375

Which issue(s) this PR fixes or relates to

Fixes #

Checklist

• Tests updated.
• Documentation added.
• CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX].
• about-versioning.md updated with experimental features.

[narqo]

🔥

[grafanabot]

The backport to r316 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-10403-to-r316 origin/r316
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 8bedb97dd18aa7b12863caa4c413b52c81cbc8ec
# Push it to GitHub
git push --set-upstream origin backport-10403-to-r316
git switch main
# Remove the local backport branch
git branch -D backport-10403-to-r316

Then, create a pull request where the base branch is r316 and the compare/head branch is backport-10403-to-r316.

[grafanabot]

The backport to r321 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-10403-to-r321 origin/r321
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 8bedb97dd18aa7b12863caa4c413b52c81cbc8ec
# Push it to GitHub
git push --set-upstream origin backport-10403-to-r321
git switch main
# Remove the local backport branch
git branch -D backport-10403-to-r321

Then, create a pull request where the base branch is r321 and the compare/head branch is backport-10403-to-r321.

[grafanabot]

The backport to r320 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-10403-to-r320 origin/r320
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 8bedb97dd18aa7b12863caa4c413b52c81cbc8ec
# Push it to GitHub
git push --set-upstream origin backport-10403-to-r320
git switch main
# Remove the local backport branch
git branch -D backport-10403-to-r320

Then, create a pull request where the base branch is r320 and the compare/head branch is backport-10403-to-r320.