fix(layer): reverting SSM parameter name (aws-powertools#5340)

Reverting SSM parameter name

Author: leandrodamascena

layer_v3/app.py

@@ -10,7 +10,7 @@
 POWERTOOLS_VERSION: str = app.node.try_get_context("version")
 PYTHON_VERSION: str = app.node.try_get_context("pythonVersion")
 PYTHON_VERSION_NORMALIZED = PYTHON_VERSION.replace(".", "")
-SSM_PARAM_LAYER_ARN: str = f"/layers/powertools-layer-v3-{PYTHON_VERSION_NORMALIZED}-x86_64-arn"
+SSM_PARAM_LAYER_ARN: str = f"/layers/powertools-layer-v3-{PYTHON_VERSION_NORMALIZED}-x86-arn"
 SSM_PARAM_LAYER_ARM64_ARN: str = f"/layers/powertools-layer-v3-{PYTHON_VERSION_NORMALIZED}-arm64-arn"
 
 # Validate context variables