chore: update minimum support version to iOS 14 (RMCCX-7398)

[SoumenRautray]

Description

Update minimum support version to iOS 14

Links

[RMCCX-7398]

Checklist

• I have read the contributing guidelines
• I have added to the changelog
• I wrote/updated tests for new/changed code
• I removed all sensitive data before every commit, including API endpoints and keys, and internal links
• I ran fastlane ci without errors
• All project file changes are replicated in SampleSPM/SampleSPM.xcodeproj project

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[rakutentech-danger-bot]

	7 Warnings
⚠️	This PR does not have any assignees yet
⚠️	Branch name "RMCCX-7398" should match format: <type>/<ticket-no>_<short-desc> or <type>/<short-desc> or release/<version or desc>
⚠️	Commit message "chore: fix spm build error (RMCCX-7398)" should append ticket number(s) e.g. (SDKCF-1234, SDKCF-1235)
⚠️	Commit message "chore: fix bitrise error (RMCCX-7398)" should append ticket number(s) e.g. (SDKCF-1234, SDKCF-1235)
⚠️	Commit message "chore: change iOS versions (RMCCX-7398)" should append ticket number(s) e.g. (SDKCF-1234, SDKCF-1235)
⚠️	Commit message "chore: modify iOS version (RMCCX-7398)" should append ticket number(s) e.g. (SDKCF-1234, SDKCF-1235)
⚠️	Commit message "chore: update minimum support version to iOS 14 (RMCCX-7398)" should append ticket number(s) e.g. (SDKCF-1234, SDKCF-1235)

Current coverage for RInAppMessaging.framework is 90.05%

Files changed	-	-
View+IAM.swift	0.00%	💀
UIApplication+IAM.swift	85.48%	✅

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