Log Message:
thunderbird: Update to 115.5.0

Changelog:
Fixes

fixed
Initial message was not automatically selected when opened in conversation

fixed
Newsgroup users using FQDN identity generated message ID headers with incorrect
domain name

fixed
Link previews had poor legibility in dark mode

fixed
Plasma's task switcher displayed the default icon when running the Thunderbird
Flatpak on Wayland

fixed
Link to Flatpak manifest was incorrect

fixed
Security fixes

security fixes:
Mozilla Foundation Security Advisory 2023-52
#CVE-2023-6204: Out-of-bound memory access in WebGL2 blitFramebuffer
#CVE-2023-6205: Use-after-free in MessagePort::Entangled
#CVE-2023-6206: Clickjacking permission prompts using the fullscreen transition
#CVE-2023-6207: Use-after-free in ReadableByteStreamQueueEntry::Buffer
#CVE-2023-6208: Using Selection API would copy contents into X11 primary
 selection.
#CVE-2023-6209: Incorrect parsing of relative URLs starting with "///"
#CVE-2023-6212: Memory safety bugs fixed in Firefox 120, Firefox ESR 115.5, and
 Thunderbird 115.5