chore: Update docker image version for nightly run

[dipinknair]

Update to use 26R1 in scheduled ci/cd runs

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.04% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (d2bffb0)	2537	2194	86.48%
Head commit (1e49a88)	2537 (+0)	2193 (-1)	86.44% (-0.04%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1188)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.44%. Comparing base (d2bffb0) to head (1e49a88).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1188      +/-   ##
==========================================
- Coverage   86.48%   86.44%   -0.04%     
==========================================
  Files          39       39              
  Lines        2537     2537              
==========================================
- Hits         2194     2193       -1     
- Misses        343      344       +1     

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