Prep for 0.5.3 release (#1213)

This PR prepares for the 0.5.3 release and fixes the documentation
deploy script (this was already fixed on main but wasn't backported).

Author: coruscating

docs/conf.py

@@ -38,7 +38,7 @@
 # The short X.Y version
 version = "0.5"
 # The full version, including alpha/beta/rc tags
-release = "0.5.2"
+release = "0.5.3"
 project = f"Qiskit Experiments {version}"
 copyright = f"2021-{datetime.date.today().year}, Qiskit Development Team"  # pylint: disable=redefined-builtin
 author = "Qiskit Development Team"

qiskit_experiments/VERSION.txt

@@ -1 +1 @@
-0.5.2
+0.5.3

releasenotes/notes/0.5/0_5_3_release-71ba547279508401.yaml

@@ -0,0 +1,3 @@
+---
+prelude: >
+    Qiskit Experiments 0.5.3 is a minor improvement and fixes release.

tools/deploy_documentation.sh

@@ -34,6 +34,6 @@ echo "Building for stable version $STABLE_VERSION"
 # Push to qiskit.org website
 openssl aes-256-cbc -K $encrypted_rclone_key -iv $encrypted_rclone_iv -in tools/rclone.conf.enc -out $RCLONE_CONFIG_PATH -d
 echo "Pushing built docs to website"
-rclone sync --progress --exclude-from ./tools/other-builds.txt ./docs/_build/html IBMCOS:qiskit-org-web-resources/documentation/experiments
+rclone sync --progress --exclude-from ./tools/other-builds.txt ./docs/_build/html IBMCOS:qiskit-org-web-resources/ecosystem/experiments
 echo "Pushing built docs to website"
-rclone sync --progress ./docs/_build/html IBMCOS:qiskit-org-web-resources/documentation/experiments/stable/"$STABLE_VERSION"
+rclone sync --progress ./docs/_build/html IBMCOS:qiskit-org-web-resources/ecosystem/experiments/stable/"$STABLE_VERSION"