chore: revert to using ssm:GetParameter

[jmdeal]

Fixes #N/A

Description
Reverts to using ssm:GetParameter over ssm:GetParametersByPath to increase granularity on caching.

How was this change tested?
TODO

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[netlify]

✅ Deploy Preview for karpenter-docs-prod canceled.

Name	Link
🔨 Latest commit	8bd9735
🔍 Latest deploy log	https://app.netlify.com/sites/karpenter-docs-prod/deploys/66bbe4a774206000089947a6

[coveralls]

Pull Request Test Coverage Report for Build 10378408052

Details

• 101 of 103 (98.06%) changed or added relevant lines in 6 files are covered.
• 15 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.03%) to 79.322%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/fake/ssmapi.go	25	27	92.59%

Files with Coverage Reduction	New Missed Lines	%
pkg/providers/amifamily/ami.go	1	91.67%
pkg/fake/ssmapi.go	1	90.24%
pkg/providers/amifamily/types.go	5	80.95%
pkg/providers/version/version.go	8	65.85%

Totals
Change from base Build 10376315087:	0.03%
Covered Lines:	5919
Relevant Lines:	7462

---

💛 - Coveralls

[njtran]

LGTM

[njtran]

/karpenter snapshot

[github-actions]

Snapshot successfully published to oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter:0-88f089b3b22423e6109cb5908deef82b02cdc18e.
To install you must login to the ECR repo with an AWS account:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 021119463062.dkr.ecr.us-east-1.amazonaws.com

helm upgrade --install karpenter oci://021119463062.dkr.ecr.us-east-1.amazonaws.com/karpenter/snapshot/karpenter --version "0-88f089b3b22423e6109cb5908deef82b02cdc18e" --namespace "kube-system" --create-namespace \
  --set "settings.clusterName=${CLUSTER_NAME}" \
  --set "settings.interruptionQueue=${CLUSTER_NAME}" \
  --set controller.resources.requests.cpu=1 \
  --set controller.resources.requests.memory=1Gi \
  --set controller.resources.limits.cpu=1 \
  --set controller.resources.limits.memory=1Gi \
  --wait