Bump pyasn1 in /circleci/images/citusupgradetester/files/etc

Bumps [pyasn1](https://github.com/pyasn1/pyasn1) from 0.6.2 to 0.6.3.
- [Release notes](https://github.com/pyasn1/pyasn1/releases)
- [Changelog](https://github.com/pyasn1/pyasn1/blob/main/CHANGES.rst)
- [Commits](pyasn1/pyasn1@v0.6.2...v0.6.3)

---
updated-dependencies:
- dependency-name: pyasn1
  dependency-version: 0.6.3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

circleci/images/citusupgradetester/files/etc/requirements.txt

@@ -38,7 +38,7 @@ packaging==26.0; python_version >= '3.8'
 pluggy==1.6.0; python_version >= '3.9'
 psycopg==3.3.3; python_version >= '3.10'
 publicsuffix2==2.20191221
-pyasn1==0.6.2; python_version >= '3.8'
+pyasn1==0.6.3; python_version >= '3.8'
 pyasn1-modules==0.4.2; python_version >= '3.8'
 pycparser==3.0; python_version >= '3.10'
 pygments==2.19.2; python_version >= '3.8'