Downgrade DnsJava

[ahmedre]

DnsJava 3.x crashes on devices without java.nio.file.Paths, which
desugar doesn't help with. Until minSdk is 26-ish (Android O), we should
continue using the 2.x version.

[github-actions]

OLD: app-madani-debug.apk (signature: V1, V2)
NEW: app-madani-debug.apk (signature: V1, V2)

          │             compressed             │            uncompressed            
          ├───────────┬───────────┬────────────┼───────────┬───────────┬────────────
 APK      │ old       │ new       │ diff       │ old       │ new       │ diff       
──────────┼───────────┼───────────┼────────────┼───────────┼───────────┼────────────
      dex │  24.2 MiB │  24.1 MiB │ -131.1 KiB │  74.9 MiB │  74.6 MiB │ -298.8 KiB 
     arsc │   2.7 MiB │   2.7 MiB │        0 B │   2.7 MiB │   2.7 MiB │        0 B 
 manifest │   5.8 KiB │   5.8 KiB │        0 B │    28 KiB │    28 KiB │        0 B 
      res │     2 MiB │     2 MiB │       +4 B │   2.2 MiB │   2.2 MiB │        0 B 
   native │  18.8 KiB │  18.8 KiB │        0 B │  36.5 KiB │  36.5 KiB │        0 B 
    asset │ 404.2 KiB │ 404.2 KiB │        0 B │ 678.6 KiB │ 678.6 KiB │        0 B 
    other │ 258.7 KiB │ 256.5 KiB │   -2.2 KiB │ 579.8 KiB │ 574.2 KiB │   -5.7 KiB 
──────────┼───────────┼───────────┼────────────┼───────────┼───────────┼────────────
    total │  29.6 MiB │  29.5 MiB │ -133.3 KiB │    81 MiB │  80.7 MiB │ -304.4 KiB 

[github-actions]

Removed Dependencies
org.slf4j:slf4j-api:1.7.36

Upgraded Dependencies
dnsjava:dnsjava:2.1.9, (changed from 3.6.2)