Update to 115.6 and remove upstreamed ffmpeg-patch

firefox/MozillaFirefox.spec

@@ -29,8 +29,8 @@
 # major 69
 # mainver %%major.99
 %define major          115
-%define mainver        %major.3.1
-%define orig_version   115.3.1
+%define mainver        %major.6.0
+%define orig_version   115.6.0
 %define orig_suffix    esr
 %define update_channel release
 %define branding       1
@@ -233,7 +233,6 @@ Patch18:        mozilla-silence-no-return-type.patch
 Patch19:        mozilla-bmo531915.patch
 Patch20:        one_swizzle_to_rule_them_all.patch
 Patch21:        svg-rendering.patch
-Patch22:        mozilla-fix-broken-ffmpeg.patch
 Patch28:        mozilla-partial-revert-1768632.patch
 # Firefox/browser
 Patch101:       firefox-kde.patch

firefox/tar_stamps

@@ -1,10 +1,10 @@
 PRODUCT="firefox"
 CHANNEL="release"
-VERSION="115.3.1"
+VERSION="115.6.0"
 VERSION_SUFFIX="esr"
-PREV_VERSION="115.3.0"
+PREV_VERSION="115.5.0"
 PREV_VERSION_SUFFIX="esr"
 #SKIP_LOCALES="" # Uncomment to skip l10n and compare-locales-generation
 RELEASE_REPO="https://hg.mozilla.org/releases/mozilla-esr115"
-RELEASE_TAG="749617c4473c65f8aebb2e3254777ae99dc17cce"
-RELEASE_TIMESTAMP="20230927234915"
+RELEASE_TAG="aa9f02961b2bbb92e17fea5d6b8fd14c097baf72"
+RELEASE_TIMESTAMP="20231211164624"