Update digikam version 7.6.0.

Changes:
* Bumped version to latest release.

Makefile

@@ -5,8 +5,8 @@
 #
 # TODO: De-duplicate stable/unstable and finish simplifying build options.
 #
-version            = 7.5.0
-pre_release        = 7.5.0
+version            = 7.6.0
+pre_release        = 7.6.0
 BUILD_DIR          = digikam-build
 STAGING_DIR        = $(BUILD_DIR)/staging
 GPG_DIR            = $(BUILD_DIR)/gpg

README.md

@@ -13,8 +13,8 @@ usage.
 
 ## Version Tags
 This image provides various versions that are available via tags. Use `stable`
-or an explicit digikam version (e.g. 7.3.0), which will provide updates but
-minimize unexpected changes. 
+or an explicit digikam version (e.g. 7.6.0), which will provide updates but
+minimize unexpected changes.
 
 * `stable` will provide the latest officially released version of digikam.
 * `latest` will provide the latest digikam build and **will** break.
@@ -23,8 +23,8 @@ minimize unexpected changes.
 
 | Tag    | Description             | Comment                                                         |
 |--------|-------------------------|-----------------------------------------------------------------|
-| latest | digikam container 7.5.0 | [7.5.0 Release](https://download.kde.org/stable/digikam/7.5.0/) |
-| stable | digikam container 7.5.0 | [7.5.0 Release](https://download.kde.org/stable/digikam/7.5.0/) |
+| latest | digikam container 7.6.0 | [7.6.0 Release](https://download.kde.org/stable/digikam/7.6.0/) |
+| stable | digikam container 7.6.0 | [7.6.0 Release](https://download.kde.org/stable/digikam/7.6.0/) |
 
 * See detailed [release notes here][b2] for older container point releases. Only current and previous versions are kept.
 * Submit docker-related [bugs here][sl].

RELEASE.md

@@ -5,6 +5,12 @@ Uses semantic versioning, with an additional container version number:
 
 ## Unreleased
 
+## 7.6.0
+Digikam [7.6.0 relase][9f].
+
+Changes:
+* Bump digikam release version.
+
 ## 7.5.0
 Digikam [7.5.0 relase][9f].
 
@@ -15,7 +21,7 @@ Changes:
 Digikam [7.4.0 release][9f].
 
 Changes:
-* update baseimage-gui to ubuntu-20.04 due to digikam changes.
+* update baseimage-gui to (custom) ubuntu-20.04 due to digikam changes.
 
 ## 7.3.0
 Digikam [7.3.0 release][9f].
@@ -40,7 +46,7 @@ Changes:
 
 Fixes:
 * #8
- 
+
 ## 7.1.0
 Digikam [7.1.0 release][9f].