ci: Allow PR title to end with a capital letter

[shahzadlone]

Relevant issue(s)

Resolves #1236
Previous PR that was closed: #1237

Description

Allows the last character of PR title to be a capital alphabet.

Note: isn't straight forward to make back-tick work as last character, omitting that.

Tasks

• I made sure the code is well commented, particularly hard-to-understand areas.
• I made sure the repository-held documentation is changed accordingly.
• I made sure the pull request title adheres to the conventional commit style (the subset used in the project can be found in tools/configs/chglog/config.yml).
• I made sure to discuss its limitations such as threats to validity, vulnerability to mistake and misuse, robustness to invalidation of assumptions, resource requirements, ...

How has this been tested?

• make test:scripts
• And the PR title changes

[codecov]

Codecov Report

Merging #1291 (01b5fa4) into develop (055e2ea) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1291      +/-   ##
===========================================
- Coverage    70.47%   70.45%   -0.03%     
===========================================
  Files          184      184              
  Lines        17825    17825              
===========================================
- Hits         12562    12558       -4     
- Misses        4311     4314       +3     
- Partials       952      953       +1     

see 2 files with indirect coverage changes

[fredcarle]

LGTM