ccsh no Read Rights - Change fileMode to 755 (binary) in startScript task

[phanlezz]

ccsh no Read Rights - Change fileMode to 755 (binary) in startScript task

Closes: #3603

Change fileMode property in Gradle build file to the binary representation of 7 5 5.
The number 755 was previously interpreted as a random assortment of read and write rights, that didn't make any sense.

We can remove the addition of read rights in our golden_test.sh. This will be done in #3571 to avoid unnecessary merge conflicts.

Definition of Done

A PR is only ready for merge once all the following acceptance criteria are fulfilled:

• Changes have been manually tested
• All TODOs related to this PR have been closed
• There are automated tests for newly written code and bug fixes
• All bugs discovered while working on this PR have been submitted as issues (if not already an open issue)
• Documentation (GH-pages, analysis/visualization READMEs, parser READMEs, --help, etc.) has been updated (almost always necessary except for bug fixes)
• CHANGELOG.md has been updated

Screenshots or gifs

[sonarcloud]

Quality Gate passed for 'CodeCharta Analysis'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarcloud]

Quality Gate passed for 'CodeCharta Visualization'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[Nereboss]

LGTM!